Calcium Stearoyl Lactylate
What is Calcium Stearoyl Lactylate?
Calcium Stearoyl Lactylate is the calcium salt of stearoyl lactylic acid, formed by reacting stearic acid—typically from vegetable oils—with lactic acid derived from fermentation of carbohydrates or milk sugars, then neutralizing with calcium hydroxide. This creates a waxy, white powder soluble in hot oils and alcohol but not water. In cosmetics, it appears mainly in moisturizers, foundations, and shampoos at low levels. As an emulsifying agent, it positions itself at oil-water interfaces, forming a protective film that prevents droplet separation for lasting cream stability. Its surfactant properties lower surface tension, aiding gentle foam formation and dirt removal in rinse-off products without stripping skin's moisture barrier. This dual action supports formulation of lightweight lotions and non-greasy emulsions, enhancing product spreadability and shelf life.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Helps create stable lotions and creams by blending oils and water evenly.
Provides mild cleansing and foaming in washes without harshness.
Improves texture for smoother, easier-to-apply skincare products.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| People with normal or dry skin seeking hydrating emulsions. | Individuals with known sensitivity to lactic acid derivatives. |
| Those preferring gentle, non-drying cleansers. | Those preferring silicone- or polymer-free emulsifiers. |
| Users of makeup or lotions needing consistent, non-separating formulas. | People avoiding dairy-derived ingredients, if sourced from milk. |
Safety Notes
- Rated low hazard by independent reviews for typical cosmetic use.
- Minimal absorption through skin with no reported systemic concerns.
Frequently Asked Questions about Calcium Stearoyl Lactylate
What does Calcium Stearoyl Lactylate do in skincare?
It emulsifies oils and water for stable products and provides gentle surfactant action for cleansing.
Is it safe for sensitive skin?
Yes, it carries low irritation risk based on cosmetic safety evaluations.
Where does it come from?
Derived from stearic acid and lactic acid via fermentation, often plant-based.