Does Alcohol Denat / Denatured Alcohol Cause Hyperpigmentation?

Evidence-based guidance on alcohol denat / denatured alcohol and its risk of triggering or worsening dark spots, melasma, and post-inflammatory hyperpigmentation.

Risk level

MODERATE risk

High concentrations of denatured alcohol can strip lipids and disrupt the skin barrier. A compromised barrier is more prone to inflammation and post-inflammatory hyperpigmentation.

How it can affect pigmentation

Lipid stripping and barrier disruption
Increased transepidermal water loss
Inflammation and PIH in sensitive skin

Usage advice

Small amounts in rinse-off products are usually fine, but high concentrations in leave-on toners and serums can be problematic for pigmentation-prone skin.

Recommendations

Avoid alcohol-heavy leave-on products.
Layer moisturizer after alcohol-containing products.
Always use sun protection if your skin tends to hyperpigment; we recommend a zinc oxide sunscreen.

Sources

Skin barrier and irritation. Draelos ZD. Dermatol Ther. 2012;25(3):229-233. link

Related ingredients

Witch Hazel Sodium Lauryl Sulfate (SLS)

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