The sap (“juice”) from the birch tree known by its Latin name of Betula Alba. Birch Sap is a skin barrier soothing and hydrating tree sap. Packed with 17 amino acids, antioxidants, enzymes, minerals, and proteins it fortifies the skin barrier. Not only is it loaded with skin-loving nutrients, but it is also more hydrating than water for the skin due to its tiny molecules which allow the skin to absorb better. In formulating Hustle, we replaced water as the base solvent with Birch Sap for this very reason. It helps to prevent moisture loss from your skin while maintaining a positive oil-moisture barrier. Studies have shown that birch sap juice helps in skin homeostasis and keratinocytes differentiation, thereby strengthening your skin barrier.

It is a product derived from fermentation of Bifida (Bifidobacterium longum), a bacterium found in the human digestive system. It is a prebiotic and it is believed to bring pH of skin down to maintain the healthy microflora of the skin. Bifidobacteria produces nutrient-rich metabolites during proliferation and growth. The fragmented component of cell itself has a large amount of beneficial substances, which has a significant balance and promotion effect on the growth of human epidermal probiotics.

Butylene glycol is an organic alcohol derived from petroleum and is water-soluble. It is a clear, viscous liquid which plays many different roles in skincare formulations, including as a humectant, texture enhancer, solvent, and penetration booster. Being a humectant, it binds water and pulls in hydration to the outer layer of the skin. In addition to being a humectant, butylene glycol may also function as an emollient by creating a barrier on the skin, which prevents water loss and softens and conditions. Lastly, butylene glycol improves penetration by breaking down hard-to-dissolve active ingredients, which helps the product perform more effectively.

Betaine helps to improve the hydration levels in the skin, giving your skin that dewy, plumped look. Furthermore, the ability of betaine to increase skin hydration has an anti-wrinkle effect. Being a non-irritating ingredient, it helps soothe inflamed skin and maintain the skin’s natural barrier, protecting the skin from water loss, allergens, and bacteria. It is also a texture enhancing agent that provides a silky feeling to skincare formulations without causing tackiness.

Carbomer is a common thickening ingredient used in cosmetic formulations. It creates viscous, clear gels that also feel nice and non-tacky on the skin.

Ceramides are lipids that are found in high concentrations in the uppermost layers of skin. One of the best ways to understand how ceramides function is to imagine your stratum corneum (the outermost layer of your skin) to be made up of bricks and mortar. The skin cells are essentially the brick, and the lipids are in between, and that’s what we call the mortar. Without the mortar, the skin barrier will be compromised. Ceramides help reinforce the skin barrier by forming a protective layer that prevents water loss and protects against environmental stressors — giving you plumper, smoother, firmer-feeling skin with fewer visible lines and wrinkles.  

An oily, somewhat waxy ester that comes from cetearyl alcohol and the fatty acids from olive oil. It has been coupled with Sorbitan Olivate as the two together form the well-known, natural emulsifier, trade named Olivem 1000. Other than helping oil and water to blend, Olivem 1000 generates liquid crystal structures that are similar to the lipid structures of the stratum corneum (the outermost layer of the skin). Thanks to this, Olivem 1000 doubles as an active ingredient with significant moisturizing, barrier-repairing and soothing properties.

Cholesterol is a natural component of the skin barrier, together with ceramides and fatty acids. When cholesterol is applied to the skin topically, it strengthens the skin barrier and plays a replenishing role to support the moisture balance and lipid composition for healthier skin. Fortifying the barrier in this way also helps it resist damage from external aggressors. Apart from being an important skin-identical ingredient, cholesterol is also an emollient, stabilizer, surfactant and water-binding agent. 

A potent antioxidant that offsets the signs of environmental damage. It has anti-inflammatory and antimicrobial properties that are particularly beneficial for acne-prone skin. 

Corallina Officinalis is a red alga which is found mainly in the rocky shores of Great Britain and Ireland. Just like other alga, this alga carries a wide range of actives. It contains polysaccharide, amino acids, lipids, minerals, vitamins, chlorophyll, carotenoids, phycobilins, and other trace elements in it. It has a variety of ingredients that can exfoliate the skin, scavenge free radicals, expedite cellular turnover and keep the skin moist and smooth.

It is one of the
most nourishing natural ingredients for skincare. It has more hydrating oleic
acid than olive oil or avocado oil, and it is naturally rich in antioxidants,
essential fatty acids, and Vitamins A, B, D, and E, all of which help seal in
moisture. The molecular weight of the oil is an almost identical match for
skin, allowing it to absorb quickly and thoroughly.

Cetearyl
ethylhexanoate is a clear, oil-like liquid that functions as an emollient to
defend skin against moisture loss. It has great spreadability that gives a
velvety and silky feel to the skin. It's commonly used in makeup removers.

A cosmetic
biocide which is obtained by the fermentation of glucose and methyl rapeseedate
ferment by a non-pathogenic yeast Candida bombicola and used in personal care
products to maintain skin health. It inhibits excess sebum production and
exhibits antimicrobial properties. It decreases the growth of microorganisms on
the skin and protects the skin from infections.

Caprylic/capric
triglyceride is derived from coconut oil and glycerin and is considered an
excellent emollient and skin-replenishing ingredient. Its mix of fatty acids
replenish skin’s surface and help it to resist moisture loss.

Caprylyl glycol
is a great ingredient used in thousands of products because of its hydrating
and moisturizing properties. It attracts and locks water to the topmost layer
of the skin. Caprylyl glycol is also a preservative that increases the shelf
life of the products that it is used in.

Disodium EDTA binds to metal ions (which are naturally found in water) and inactivates them. The binding of metal ions helps prevent the deterioration of cosmetics. It also helps to maintain clarity and prevent rancidity of the formulation.

Dicaprylyl carbonate is a skin-conditioning agent, emollient and solvent that helps enhance the absorption of other ingredients in a cosmetic formula. It is a colorless, almost odorless oil that spreads easily and leaves a velvet dry skin feel.

Ethylhexylglycerin is a medium emollient but more importantly it is a preservative booster, that enhances the preservative efficacy of other preservative ingredients in the formulation.

 It is the sterol portion derived from the acai plant. Being a rich source of fatty acids, it increases hydration in the skin, prevents water loss and enhances the barrier function. It is also a potent antioxidant that protects the skin from free radicals. 

 It is a plant extract that is commonly referred to as Yerba De Tago and Bhringraj. Eclipta Prostrata is a potent antioxidant with skin-calming and wound-healing properties. It is also anti-inflammatory as it reduces redness and swelling of skin tissues and prevents the growth of fungi, bacteria and viruses which can damage the skin. 

Masking fragrance is used in Hustle to balance out the smell of the ferment ingredients. Hustle contains alcohol and allergen free fragrance that is non-sensitizing on the skin. Hustle contains 0.02 ml of fragrance (i.e. 0.07% of the formulation).

During the process of fermentation, the galactomyces yeast break down natural ingredients that they have been added to, making new compounds that are beneficial for the skin (such as amino acids, organic acids and antioxidants). These compounds have smaller molecular size and have better penetration power into the epidermis. Clinically proven to strengthen the skin’s moisture barrier. They are a big reserve of antioxidants and anti-inflammatory substances. They also reduce melanin synthesis, and help in reducing the skin’s sebum production.

Glycerin is the OG humectant, meaning that it helps our skin to cling onto water. It keeps the skin lipids between our skin cells in a healthy (liquid crystal) state, protects against irritation, helps to restore barrier.

Glycolipids are biosurfactants produced by different yeasts, and have unique crystal forming and moisturising properties. One of the many uses are as an encapsulation emulsifier for better delivery of active ingredients.

A mixture of portions of glycerin and stearic acid used as an emollient, surfactant, and emulsifier. It helps water and oil mix together, gives body to creams and leaves the skin feeling soft and smooth.

1,2 hexanediol is a non-sensitizing synthetic preservative belonging to the family of higher molecular glycols. It is also a humectant, emollient, and an ingredient that boosts the antimicrobial activity of other preservatives.

A sugar molecule found naturally in the skin, it increases skin's moisture content and prevents water loss. It is a powerful humectant that can hold 1,000 times its weight in water. It works by attracting water molecules from the air and trapping them into your skin layers.

Hydroxyethylcellulose is a common ingredient in skin care formulations. It acts as a binder, an emulsifier, stabilizer, a film former, and a viscosity increasing agent. It is plant derived and improves the overall carrier performance of the formulation.

Hydrogenated form of the skin-restoring ingredient lecithin. enhances the appearance of dry or damaged skin by reducing flaking and restoring suppleness. This ingredient also helps to form emulsions by reducing the surface tension of the substances to be emulsified.

 A polymer that functions as a stabilizer, texture enhancer, emulsifier, and viscosity controlling ingredient. It is a gelling agent that thickens, emulsifies, and stabilizes products and solutions. It also acts as a thickening and gelling agent that creates a nice, non-sticky and supple texture. 

Helianthus
annuus seed oil is a non-volatile, non-fragrant plant oil from sunflower that
is used as an emollient in cosmetics. This seed oil has the ability to help
replenish, strengthen, and soothe skin. This oil also contains other beneficial
fatty acids that the skin can use, including oleic, palmitic, stearic, and a
small amount of omega-3 linolenic acid. Helianthus annuus seed oil is
particularly beneficial for dry, dehydrated, or environmentally compromised
skin. It also has a natural calming effect on skin, so can be helpful for
reducing signs of skin stress or irritation.

The oil coming
from the pulp of the sea buckthorn berry. It has a pretty unique fatty acid
composition: it is a combination of the rare Omega-7 and the more common
palmitic acid. The fatty acids give the oil moisturizing and skin-protecting
abilities. It also contains Vitamin E (in multiple forms), antioxidant pigments
beta-carotene and lycopene, as well as skin-soothing and replenishing
beta-sitosterol.

Jojoba esters
are a range of oil-free wax esters derived from the seeds of the jojoba plant.
Jojoba esters provide an elegant glide and a soft texture to skin care
formulations. These esters also play a role in helping skin retain moisture and
improving its barrier function.

It's an
alternative to natural preservative that comes from radishes fermented with
Leuconostoc kimchii, a lactic acid bacteria that has been used to make traditional
Korean dish, kimchi. During the fermentation process, a peptide is secreted
from the bacteria that has significant antimicrobial properties.

Magnesium Ascorbyl Phosphate is another stable Vitamin C derivatives, and is water soluble. In-vitro data shows that MAP can boost collagen synthesis similar to pure Vitamin C, and in-vivo data proves that MAP works as a skin brightener. Recommended concentrations range from 0.001% – 3%.

Latin term for the extract from the leaf of the neem plant.

Latin term for the extract from the flower of the neem plant.

It contains antioxidants known to be particularly effective in neutralizing the most damaging free radicals, protecting the skin from environmental aggressors and premature aging.

A non-fragrant plant oil that contains several antioxidants, including zeatin, quercetin, and vitamins A, C, and E. The oil is also a very good source of oleic acid, a monounsaturated fatty acid that can replenish skin and help guard against moisture loss. Moringa Oleifera Seed Oil also contains amino acids as well as plant sterols which can have a calming effect on the skin.

The soft solid,
off-white to ivory butter or oil coming from the kernel (the seed inside of the
seed) of the Mango. Similar to many other plant oils, it's a great moisturizing
and nourishing emollient oil. It has medium spreadability and gives skin a
creamy-dry feel. It contains almost all of the essential amino acids, has
several antioxidant phenolic and is a rich source of nourishing fatty acids.

A multi-functional skincare superstar with several proven benefits for the skin. At 4-5% concentration its proven to smooth fine lines and wrinkles. At 2% concentration it fades brown spots with regular use, and increases ceramide synthesis that results in a stronger, healthier skin barrier and better skin hydration. It can help to improve several skin conditions including acne, rosacea, and atopic dermatitis. It’s truly the MVP of skincare ingredients.

Evening Primrose oil is a nourishing oil full of fatty acids. It is a rich source of linoleic acid (66-76%), and also contains the soothing and healing superstar fatty acid, gamma-linolenic acid. It helps to reduce inflammation and irritation, and is a superb healing agent that can truly help dry skin.

Oleic acid is a natural, monounsaturated omega-9 fatty acid that’s found in many plants, including grape seed, olives, and sea buckthorn. It is great for replenishing dry, aging skin as it penetrates the skin to moisturize below the skin’s surface. Being rich in antioxidants, it helps fight off free radicals that can cause premature aging. Oleic acid also helps calm and soothe skin. It has anti-inflammatory properties that promote balanced, calm skin. In cosmetics, oleic acid is used as a cleansing agent and texture enhancer. It’s among the more stable fatty acids, and has a unique ability to preserve the effectiveness of more delicate ingredients such as antioxidants by helping to protect them from light and air degradation.

 Commonly known as the Holy Basil Leaf Extract, contains Rosmarinic Acid which has the highest content of Phenolic Acid that contributes to potent antioxidant activity on the skin. Along with antioxidant benefits, studies have also shown this extract provides anti-aging benefits.

Opuntia
ficus-indica stem extract comes from a type of cactus known as prickly pear
whose stem is a bountiful source of antioxidant compounds known as polyphenols,
many of which are excellent at visibly reducing signs of sensitized skin. Along
with being a great source of antioxidants, it also contains polyunsaturated
fatty acids and amino acids which deliver replenishing and hydrating benefits
to skin. Like many plant-derived antioxidants, this one helps neutralize the
damaging effects of airborne pollutants.

Propanediol is a natural solvent, produced sustainably from corn sugar. It's quite a multi-tasker: can be used to improve skin moisturization, as a solvent, to boost preservative efficacy or to influence the sensory properties of the end formula.

Panthenol is Pro-Vitamin B5, meaning it is a precursor to Vitamin B (Panthenoic Acid). Provitamin B5 stabilises the skin's barrier function, reducing the amount of water lost through the skin. This, in turn, improves skin texture and elasticity, making Panthenol ideal for treating dry, scaly or coarse skin. In addition to its moisture retaining and softening properties, Panthenol also reduces itching, redness and suppresses inflammation. Thanks to its soothing and repairing properties, Panthenol also helps relieve inflamed acne and sensitised or irritated skin.

Polysorbate 20 is an emulsifier that is used in formulation when they contain both oil soluble and water-soluble ingredients. It consists of a water-loving hydrophilic head and an oil-loving hydrophobic tail (lauric acid), that helps combine the aqueous phase of the formulation to the oil phase of the formulation. As an emulsifier it reduces the surface tension by positioning itself at the oil/water interface, which has a stabilizing effect on the emulsion.

Polyglutamic acid (PGA) is a water-soluble peptide that is derived from fermented soybeans. Clinical studies show that it holds upto 5000 times it’s weight in water (that’s five times more than Hyaluronic Acid). PGA also shows mild occlusive properties and hence works great to seal in the water molecules that it attracts into the epidermal layers of the skin.

Palmitoyl tripeptide-1, also called pal-GHK, is a messenger peptide for collagen renewal. It works by stimulating the synthesis of Collagen and Glycosaminoglycan, which reinforces the epidermis and results in diminishing the wrinkles.

Palmitoyl tetrapeptide - 7 or pal-GQPR is a fragment of immunoglobulin G. Palmitoyl tetrapeptide-7, and it decreases IL-6 secretion in a basal setting, and serves as an anti-inflammatory after exposure to UVB-irradiation.

These two peptides work synergistically to restore and maintain the skin’s youthful appearance by signaling to cells to produce more collagen. Numerous studies have proven that these two peptides together show great anti-aging and anti-wrinkle properties. Changes in reduction of wrinkle depth, volume and density, skin roughness and complexity, as well as a decrease
of the area occupied by deep wrinkles, and an increase in skin tone, are some of the benefits observed and concluded in blind studies.  

Polyglyceryl-10 Oleate is a plant based non-ionic ester emulsifier that forms stable oil-water emulsions with low viscosity, and has shown to provide enhanced moisturising factor to the formulation.

Pantolactone is a humectant to help the skin retain moisture, leaving skin looking glowy, healthy and plump, but it also acts as a solvent for other ingredients.

Extract of a succulent plant commonly known as purslane. It is a potent antioxidant that is packed with high amounts of Vitamin A (beta-carotene), Vitamin C (ascorbic acid), Vitamin E (alpha-tocopherol) and Glutathione. Purslane is also a very rich source of skin-beneficial components like Potassium, Magnesium, Calcium, Phosphorus, Omega-3 and Omega-6 fatty acids. Thanks to its composition, purslane extract is known to provide anti-inflammatory, antioxidant, wound-healing and hydrating benefits. Due to its anti-inflammatory property, it supports skin cells, protects against free radical damage, and helps renew structural components of the skin. In addition, the high content of Vitamin A in Purslane Extract helps with the regulation of skin cell turnover, wound healing and repairing cellular damage.

 Phytosphingosine is a phospholipid, a fat that’s naturally found in the outermost layer of the skin. It is one of the components of the skin barrier, along with ceramides, cholesterol, and fatty acids. It is one of the key players in maintaining the health and function of the skin barrier. As we age, we lose the natural moisturizing factor which causes the skin to become dry, flaky, and have more fine lines and wrinkles. When phytosphingosine is added to topical products, it improves the skin's ability to stay hydrated, firm and intact. Additionally, there is emerging research that Phytosphingosine has antimicrobial and cell-communicating properties, and is considered a part of the skin's natural defense system. Couple that with its skin barrier-strengthening properties, and it’s a great option for those dealing with acne or irritated skin conditions such as eczema.

Palmitic acid is the most common saturated fatty acid found in animals, plants, and microorganisms. Fatty acids, including palmitic acid, along with ceramides and cholesterol make up the skin’s lipid barrier. Palmitic acid helps to restore the skin’s natural barrier function. It has many functions in cosmetics, from being a surfactant to emollient. As an emollient, it helps to soften and soothe the skin, while helping to trap moisture in the skin and give your skin that dewy, hydrated look.

PEG-10
Isostearate is commonly used in cleansing balm formulations to remove makeup
in water-in-oil form, which can dissolve makeup well.

PEG-20 Glyceryl
Triisostearate is a surfactant that is commonly used as an emulsifier and a
cleansing agent. It cleanses airborne pollutants from the skin and also has the
ability to help oily ingredients rinse from the skin without leaving a greasy
residue.

Resveratrol is a naturally occurring antioxidant that can be found in the skin of grapes, peanuts, all berries, and even dark chocolate. Resveratrol, a water-soluble antioxidant, works synergistically with fat-soluble antioxidants like vitamin E to prevent further skin aging. It is proven to be a much stronger antioxidant than even Vitamin E and Vitamin C in fighting off oxidative stress and free radicals. A phytoalexin, resveratrol is produced by plants as a protective antibiotic to fight off fungal attacks, drought, UV radiation and inflammation. Due to its antimicrobial properties, resveratrol inhibits the growth of acne-causing bacteria, as well as enhances the effects of the acne-fighter Benzoyl Peroxide. It also tackles acne inflammation and post-acne scarring by reducing redness, calming the skin and lightening dark spots, giving you a more even complexion.

Also known as the Rosehip Oil, this is also high in its omega fatty acid content (linoleic acid - 51%, linolenic acid - 19% and oleic acid - 20%) and has skin-regenerative properties. It also contains oil-soluble tocopherols (vitamin E) and carotenoids (pro-vitamin A).

Castor oil is thicker than other oils, and it’s fatty acid content has a unique fatty acid called ricinoleic acid (85-95%). Ricinoleic acid helps protect the skin against harmful bacteria and viruses, thereby preventing irritation, redness, and acne. Its potent yet gentle properties help alleviate itchiness, swelling, sunburn, and general irritation while preventing infections and inflammation. It is a very effective emollient and occlusive that reduces skin moisture loss hence is effective even in smaller concentrations in products.

Squalane (derivative of the highly unstable molecule squalene) is naturally occurring in human sebum. Derived from either fish or olives. (Hustle contains olive derived squalene.) Its an excellent moisturizer because it acts as an emollient, surface occlusive and also reduces Transepidermal Water Loss. Squalane is suitable for all skin types, even acne prone skin.

Jojoba oil is more of a wax ester than a plain oil. It almost mimics human sebum structure and there is anecdotal evidence that using jojoba oil regulates sebum production in oily skin types. Jojoba oil can form a semi-occlusive layer over the skin surface, and it can also penetrate the intracellular spaces to make the epidermis soft and supple.

A mixture of the fatty acids from olive oil plus a dehydrated sugar known as sorbitol. It has been coupled with Cetearyl Olivate as the two together form the well-known, natural emulsifier, trade named Olivem 1000. Other than helping oil and water to blend, Olivem 1000 generates liquid crystal structures that are similar to the lipid structures of the stratum corneum (the outermost layer of the skin). Thanks to this, Olivem 1000 doubles as an active ingredient with significant moisturizing, barrier-repairing and soothing properties.

A common multi-tasking fatty acid that is used as an emollient, emulsifier, surfactant and thickener. It has been shown to protect skin's surface against water loss and help shore up skin's protective barrier. It helps create a smooth, silky texture we all love, and also stabilizes a formulation and keeps it from separating.

A mild cleansing agent and emulsifier made by combining portions of isostearic acid (fatty acid) with the sugar ingredient sorbitol. It helps stabilize water-in-oil formulas.

Sodium hyaluronate is the salt form of the skin-replenishing ingredient hyaluronic acid. It shares the same benefits as hyaluronic acid, including its remarkable ability to help skin retain a lot of moisture - it can hold up to 1000 times its own weight in water. However, sodium hyaluronate can penetrate deeper into the skin and is more stable in cosmetic formulation. In addition to its humectant properties, sodium hyaluronate is also considered a postbiotic, meaning it can help nourish and maintain skin’s microbiome.

Synthetic wax is
a great cosmetic ingredient that is used to provide water-resistant quality in
products. It also gives a smooth and glossy feel to the skin while helping with
increasing the viscosity of the formulations. Synthetic wax improves the texture
of the products making them easier to spread. It is also non-comedogenic in
nature.

Silica Dimethyl
Silylate appears as a loose white powder that is added to cosmetic and skin
care products in order to increase their thickness. It is highly absorbent and
upon mixing with oils, it creates a gel-like substance that can be easily
applied without feeling sticky or oily.

It is an
emulsifier, which is mainly an oil loving molecule that helps water and oil mix
nicely. In itself, it can create water-in-oil emulsions but it is used mostly
next to water-loving emulsifiers to create nice and smooth oil-in-water creams.

The extract
comes from the bark of the White Willow tree. It's famous for containing
anti-inflammatory natural salicylates. Apart from soothing salicin, it contains
flavonoids and phenolic acids that give willow bark tonic, astringent and
antiseptic properties. The salicin content can offer general anti-aging properties
for skin and its other beneficial compounds contribute to its antioxidant
effects.

Naturally available in our skin, Tocopherol (Vitamin E) is the king of antioxidant ingredients. Being a fat soluble molecule it gets quickly absorbed into our skin. It works by protecting the skin cells from the free-radicals that destroy the collagen that makes our skin firm and supple. Learn more about antioxidants and free radicals here: (insert article link)

Tromethamine is a pH stabilizer, a very important ingredient to adjust and maintain the overall pH of the formulation.

This is derived from the polyphenol-rich seeds of the grape, and is a light emollient oil. It’s a great source of antioxidant polyphenols, barrier repair fatty acids (linoleic acid is about 55-77%, while oleic acid is about 12-27%) and antioxidant, skin-protectant vitamin E.

Vinyl dimethicone is a silicone powder that gives a silky and powdery feel to products. It also has some oil and sebum absorption properties.

Xantham gum is a polysaccharide derived from glucose or sucrose (sugars), used mainly to increase the viscosity of liquids in cosmetic formulations. It has also shown to have skin-conditioning properties. Along with being a thickening agent, it stabilises liquids by binding to water and prevents ingredients from separating.