WHAT IS EMUSIFIERS
Emulsifiers are molecules with hydrophilic (water-loving) and lipophilic (oil-loving) properties. Their unique structure allows them to combine with both oil and water to form stable emulsions. We understand emulsions to be colloidal systems in which tiny droplets of one immiscible liquid (e.g. oil) are dispersed in another (e.g. water) with the help of an emulsifier. The emulsifier forms a protective layer around the droplets, preventing them from flowing together and separating. Emulsifiers act as molecular “glues” that ensure even distribution and stability of the various components in the cosmetic product.
Emulsions can be divided into two main types: Oil-in-water (O/W) and water-in-oil (W/O).
Oil-in-water (O/W) emulsion: In an O/W emulsion, the oil droplets are dispersed in a continuous water phase. The emulsifiers in this type of formulation surround the oil droplets and form a protective layer that prevents them from flowing together and separating. O/W emulsions are often used in moisturizers, lotions and serums as they provide a light and non-greasy texture.
Water-in-oil (W/O) emulsion: In a W/O emulsion, water droplets are dispersed in a continuous oil phase. Emulsifiers surround the water droplets in this case and form a barrier that prevents the water from evaporating. W/O emulsions are often used in products such as cold creams and some sunscreens because they have a more occlusive and conditioning effect.
Possible uses of emulsifiers:
It is important to note that emulsifiers can also affect the texture, viscosity and sensory properties of the final product.
Emulsifiers are used in various cosmetic products, including:
Moisturizers and lotions: Here, emulsifiers help blend water- and oil-based ingredients in creams and lotions, providing moisture and nutrients to the skin without leaving a greasy residue.
Sunscreens: Emulsifiers facilitate the dispersion of UV filters in sunscreens, providing even coverage and protection from the sun’s harmful rays.
Shampoos and conditioners: Thanks to emulsifiers, creamy textures combined with stability can be ensured in hair care products, as well as efficient dispersion of active ingredients for optimal cleansing and conditioning.
Cetyl alcohol
