Benzyl Alcohol, Salicylic Acid, Glycerin, Sorbic Acid (Preservative Blend) - preservative, antimicrobial, humectant, exfoliant

INCI Name

Benzyl Alcohol, Sali...

Functions

4 Roles

Sustainability

6/10

What It Does

Preservatives are the guardians of product integrity. They prevent the growth of harmful microorganisms—bacteria, yeast, and mold—that could contaminate cosmetic products. Without preservatives, water-containing formulations would quickly become breeding grounds for pathogens.

Prevents bacterial contamination

Extends product shelf life

Ensures formula safety over time

Maintains product efficacy

Technical Properties

pH Range

3.0-6.0

Optimal working range

Viscosity Effect

neutral

Impact on formula thickness

Ingredient Compatibility

Known Interactions

RETINOLUse CautionpH Conflict

Retinol and Salicylic Acid together increase irritation risk. Salicylic Acid's optimal pH (2.5-4) destabilizes Retinol. Best used in separate routines.

GLYCOLIC ACIDUse CautionIrritation Risk

Combining AHA (Glycolic) and BHA (Salicylic) at full concentrations significantly increases irritation risk and can compromise the skin barrier. If combining, reduce concentrations of both.

LACTIC ACIDUse CautionIrritation Risk

Combining AHA (Lactic) and BHA (Salicylic) increases exfoliation beyond what most skin can tolerate. Reduce concentrations if combining, or use in separate products.

TRETINOINUse CautionIrritation Risk

Tretinoin combined with Salicylic Acid causes excessive exfoliation and irritation. Both are potent actives that thin the stratum corneum. Do not combine at full strength.

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