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*Summaries reflect outcomes reported in the referenced studies on individual actives, not the finished product.

A chemical approach

doi: 10.1016/j.aquabot.2024.103750 37 NazarkovM.GerasimovaI

Semaglutide is a synthetic analog of glucagon-like peptide-1 (GLP-1), a hormone your body naturally produces in the intestinal L-cells after eating

Avoid combining niacinamide with: AHAs/BHAs : Pairing niacinamide with exfoliating acids like glycolic, lactic, or salicylic acid can be too aggressive, especially if your skin is sensitive or compromised

These include how bad your deficiency is, your health history, and what your doctor says