Water is a great solvent. It’s neutral and doesn’t provide any strong positive or negative effects. It just helps components to mix better and to transport active components.
Butylene Glycol is a very popular synthetic alcohol. It helps the product to absorb deeper and faster. It is also a solvent for other ingredients. As for the skin benefits, it helps to attract water and helps to make the skin softer.
Glycerin is one of the most outstanding and helpful skincare components. It's used in many skincare products because it works and provides notable results. It's one of the best moisturizers. Molecules of Glycerin can absorb water and deliver it into deep layers of the skin making it hydrated.
Phenoxyethanol is one of the most popular preservatives. It kills bacteria and makes the product live longer. Manufacturers like this ingredient because it can dissolve in any liquid, even in oils.
Another purpose of this component is the fixation of aromas in perfumery. Phenoxyethanol is also used as a strong antiseptic and a good antibacterial agent. It is widely used in dermatological cosmetics alongside natural antiseptics such as chamomile, sage, and calendula.
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Pentylene Glycol
Roles: Skin conditioning, Solvent
Moisturizing
Hair conditioning
Pentylene Glycol is a great replacement for Propylene Glycol. It has very similar characteristics but it’s derived from plants (usually from corn). Natural cosmetics lovers will find this component very useful. It enhances the moisturizing effect of cosmetic products, improves the efficiency of preservatives and it’s an effective emulsifier. It’s approved by ECOCERT and COSMOS so it’s considered to be 100% safe and can be used in vegan products.
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PEG-40 Hydrogenated Castor Oil
Roles: Emulsifying, Fragrance, Surfactant
Cleansing
Soothing
Malassezia unsafe
PEG
PEG-40 Hydrogenated Castor Oil helps ingredients to mix better. It has nice cleansing activity helping to remove sebum and dirt from the surface of your skin. It's also responsible for making soft foam in soaps, shower gels, etc. Despite it having "PEG" in the title, it's considered to be safe.
Chlorphenesin is a popular preservative. It doesn’t provide any skin-related positive effects and is used to prevent bacterial growth inside a product. It’s a weak preservative but works much better with silicones.
Allowed concentration: no more than 0,3% for European Union countries.
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Hydrolyzed Hyaluronic Acid
Moisturizing
Anti-aging
Elasticity improvement
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Caprylic/Capric Triglyceride
Roles: Skin conditioning, Fragrance
Caprylic/Capric Triglyceride is an emollient that also hydrates the skin without leaving a fatty film. When applied, the component feels smooth and light. In haircare products, it’s also used for hydrating purposes. It makes hair silky, lowers tangling, and makes hair smooth.
It’s safe for most people, except for people with allergic reactions to coconut or palm oil because these oils are usually used for producing the component.
Xanthan Gum is used as a thickener or rheology modifier and emulsion stabilizer. It doesn’t provide any notable skin-related effects and is used mostly for formulation purposes. It makes the product’s texture smooth and even. It’s a naturally-derived thickener. Notable fact: it can also be found in the food you eat every day, so it is 100% safe.
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Ethylhexylglycerin
Roles: Skin conditioning, Deodorant
Moisturizing
Softening
Antiseptic
Deodorant
Ethylhexylglycerin makes the skin softer, smoother and more hydrated. It acts deeply but without any heavy or sticky feeling. In haircare products, it works as a conditioner and scalp cleanser. It is safe but only in concentration below 8% in rinse-off products and below 2% in leave-on products. Can be an irritator in higher concentrations. In general, this component is great if you see it somewhere at the bottom of the list.
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Polysorbate-60
Roles: Emulsifying, Fragrance, Surfactant
Soothing
Antiseptic
Malassezia unsafe
Polysorbate-60 is an emulsifier, foam stabilizer, and surfactant. It’s considered to be safe but if the product contains PEG ingredients, Polysorbate may produce 1,4-Dioxane which can be harmful to your health.
Sorbitol is usually used for making different gels. It helps the product to keep water and it helps to deliver active components deeper into the skin. It is a moisturizing and soothing component. It is usually accepted well by all skin types.
Glycine is the building block of skin proteins. But you should know one important thing: the body can produce this component itself and it will not accept the ingredient you put on your skin for this purpose. It will not help to improve your own glycine level. As a cosmetic component, it can work only on the surface of your skin.
Lecithin is a great emulsifier. It also has slight antioxidant activity, but it’s not enough if you are looking for a strong and effective anti-oxidant. Our skin cells contain Lecithin and that’s why this component will hardly cause any problems or negative reactions. It soaks in pretty fast and it’s accepted by skin cells very well.
Caprylyl Glycol is a vey popular skincare ingredient. It makes the product spread better and feel better on your skin. It’s a preservative and it improves the effect of other preservatives. It’s also a humectant which helps to retain water. It’s good for keeping your skin in good shape. But manufacturers use it as a supporting component rather than the main one.
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Citric AcidAntioxidantAHA
Roles: Buffering, Chelating, Fragrance, Masking
Cleansing
Exfoliating
Soothing
Lightening
Lifting
Hair growth stimulating
Citric Acid is one of the AHAs and it is a super useful component! It’s a great antioxidant. It acts as a soft peeling that removes dead cells and kills bacteria. It becomes even more effective if used with other cosmetic acids. Combined formulations are more active, but can irritate sensitive skin if used too often. The component can also whiten the skin and remove dark areas.
It can be an irritator due to its naturally lower pH level of 2.2. But manufacturers also use it as a pH adjuster so in most cases you will not have any issues.
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Iron Oxides
Roles: Colorant
Moisturizing
Iron Oxides are colorants. They give different colors to the product: yellow, red, or black. Different scientific researches show that they are much safer than other organic colorants. That's because they are much more stable and they don’t provoke allergic reactions. Though they can be received from minerals organically, manufacturers don’t use natural Iron Oxides. They chemically synthesize them in a laboratory to get a pure component without extra chemicals.
Fragrance is a mix of chemical ingredients (usually 20-30 chemicals but up to 200 sometimes) that help the product to smell better. It can hide many bad things. Synthetic fragrances may contain many different chemicals, but manufacturers don’t want to reveal each of them for some reason and hide them behind the word "Fragrance".