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.
2
Glycolic AcidAHA
Roles: Buffering, Exfoliant
Cleansing
Exfoliating
Anti-aging
Lightening
Good for oily skin
Glycolic Acid is the most researched AHA with proven efficiency and it’s a super powerful component. It’s a great exfoliator, meaning it helps to remove dead skin cells preventing bacterial growth, and make your skin look fresh and smooth. It helps to remove dark spots and areas, making skin tone even. But the most serious reason for using this component is that it helps to produce collagen, which is very important for keeping your skin healthy. This is what makes Glycolic Acid so special. Pay attention, that using any AHA makes your skin more UV sensitive. It’s very important to use good sunscreen after applying AHA.
3
Sodium Hydroxide
Roles: Buffering
Sodium Hydroxide is used mostly for formulation purposes. It helps to hold the pH level of a product. It also works as a chemical exfoliator that removes dead cells. Usually concentration of this component is low in skin care products and it’s used mostly for adjusting pH.
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.
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.
7
Sodium Hyaluronate
Roles: Skin conditioning, Humectant
Moisturizing
Softening
Anti-aging
Rejuvenation
Good for dry skin
Sodium Hyaluronate is an amazing component! It plays very important role in skin hydration process. It helps to maintain water balance and lower water loss. Scientists have found a direct dependence between the level of Sodium Hyaluronate in cells and skin aging. That's why this component is so much important. It must be in your routine if you want to have a healthy and fresh looking skin.
Some people think that Sodium Hyaluronate and Hyaluronic acid are different names of the same component, but it is not entirely correct. Hyaluronic acid is a different chemical but with similar effects. Actually, Sodium Hyaluronate is used in cosmetics much more often because it’s more stable and has much better resistance to oxidation.
8
Allantoin
Roles: Skin conditioning
Moisturizing
Pore Shrinking
Softening
Soothing
Regeneration
Good for dry skin
Good for oily skin
Allantoin usually doesn’t catch too much attention, but it is an essential ingredient for sensitive, dry, and problem skin. It is a good moisturizer that makes skin hydrated. But manufacturers love it because of its strong soothing effect. It also exfoliates dead cells, stimulates recovery of your skin, and helps to protect the skin from the sun, frost, and similar negative impacts.
The component is researched very well and its soothing activity is confirmed by scientists. Used in concentration between 0.5-2%.
Niacinamide is a form of Vitamin B3 and it’s a superman in cosmetics. This ingredient is researched very well. It has a lot of positive reviews from scientists and experts. It's very important for healthy skin. The lack of this vitamin can cause dryness, itching, and sun sensitivity. The component removes small wrinkles and fine lines, heals wounds, and prevents the forming of cancer cells. It also makes the skin tone even by removing dark spots. It increases ceramide synthesis which increases the overall health of your skin. It fights acne and lowers pores.
Researches say that 4-5% of Niacinamide is the most effective concentration for skincare use.
10
Adenosine
Roles: Skin conditioning
11
Potassium Sorbate
Roles: Fragrance, Preservative
Antifungal
Antiseptic
Potassium Sorbate is a preservative that increases the shelf life of the product. It’s a great alternative to parabens. That's why manufacturers like to use this component. It is safe in concentration of up to 10% but it is used in cosmetics in amounts of 1% or even lower.
12
Sodium Benzoate
Roles: Fragrance, Masking, Preservative
Antifungal
Antiseptic
Sodium Benzoate doesn’t have any great skincare effects and is used for formulation purposes. It’s a corrosion inhibitor, fragrance ingredient, and preservative. It is not a broad-spectrum preservative and it’s used with other preservatives for good efficiency. It’s safe, but people with eczema or a history of skin allergies should use this component with attention.
13
Potassium Phosphate
Roles: Buffering
Potassium Phosphate is an inorganic salt commonly used in cosmetics and skincare formulations. While it’s not a “hero ingredient” like niacinamide or ceramides, it plays important supporting roles that help a product stay stable, comfortable on the skin, and effective.
Potassium Phosphate (often listed as Dipotassium Phosphate or Monopotassium Phosphate depending on its form) is a buffering and chelating agent. In skincare chemistry, it helps regulate and maintain a product's pH balance — a crucial factor for both stability and skin compatibility. It helps to achieve PH balance by preventing the formula from becoming too acidic or too alkaline over time.
Main Functions:
pH Buffering Agent - Its primary purpose is to stabilize pH. Many active ingredients — such as niacinamide, ceramides, or hyaluronic acid — perform best within a particular pH range. Potassium Phosphate ensures they stay effective throughout the product’s shelf life.
Stabilizer for Emulsions - In creams and lotions, it helps maintain the stability of emulsions (the blend of water and oils), preventing unwanted separation.
Enhances Product Comfort - A stable pH often means better skin tolerance. By keeping the formula balanced, Potassium Phosphate indirectly helps reduce the risk of stinging, redness, and irritation, especially in sensitive skin.
Supports Ingredient Performance - Some actives can lose potency if the formula drifts out of range. Potassium Phosphate keeps the environment optimal, protecting their performance.
14
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.
15
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.
16
Polysorbate-20
Roles: Emulsifying, Fragrance, Surfactant
Nutrifying
Malassezia unsafe
Polysorbate 20 doesn’t have any notable skin benefits but is used in cosmetics quite often. Manufacturers use it for formulation purposes. It improves the scent, texture, and feel of the product.
Alcohol Denatured is a great bacteria killer. Manufacturers often put it inside products to increase their shelf life.
18
Phenoxyethanol
Roles: Fragrance, Preservative
Antiseptic
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.
AHA
