Science
Mechanism of Action
This ingredient operates as both an emollient and a humectant. In its unhydrolyzed state, Isostearyl Lactate forms a semi-occlusive barrier, effectively reducing transepidermal water loss. Its free hydroxyl group actively attracts water, facilitating deeper hydration of the epidermal layers. Furthermore, skin's natural esterases gradually break down Isostearyl Lactate, leading to the slow release of lactic acid, which imparts a mild exfoliating effect. It also enhances formulation aesthetics by acting as a skin conditioning agent and reducing tackiness.
Research
Clinical Evidence
High confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
For optimal stability, store Isostearyl Lactate light-protected in a cool and dry environment.
Safety
Safety Profile
The CIR Expert Panel deems Isostearyl Lactate, along with other simple lactic acid esters, safe for cosmetic use at concentrations up to 10%, provided the final formulation pH is ≥3.5. Products containing this ingredient should be formulated to prevent increased sun sensitivity or include instructions for daily sun protection. For professional salon applications, concentrations up to 30% at pH ≥3.0 are considered safe for brief, discontinuous use with thorough rinsing.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Isostearyl Lactate is a valuable ingredient for its dual ability to provide deep moisturization and gentle exfoliation, enhancing skin softness and formulation aesthetics across various product types.
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References
Sources