Skin-Care Experts Explain the Viral "Retinol Sandwich" Method

• A “retinol sandwich” is a new skin-care method taking over TikTok. • The trend involves “sandwiching” retinol in between two layers of moisturizer. • We chatted with skin-care experts to answer all of your burning questions about “sandwiching.” Retinol is one of those powerhouse skin-care ingredients …

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