A standard formula includes retinol (0.1%–0.3%), a physical exfoliant (fine sugar, sea salt, or biodegradable cellulose), an emollient base (shea butter, jojoba oil, or glycerin), antioxidants (tocopherol/vitamin E) to stabilise the retinol, a broad-spectrum preservative system, and fragrance or essential oils. Your cosmetic chemist will confirm the full INCI list and perform compatibility testing.
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