Skincare & Beauty

Evidence-based skincare picks including vitamin C serums, niacinamide lotions, under-eye treatments, and collagen supplements for skin elasticity.

Guide

Collagen peptide powders ranked on dose, types, and testing for skin, hair, and joints.

July 1, 2026 7 min read

Best-of

Does biotin really help hair growth? We review the evidence and compare the best biotin supplements for thinning hair.

June 4, 2026 6 min read

Skincare

L-ascorbic acid concentration, pH, and ferulic acid stabilization compared.

May 19, 2026 6 min read

Skincare

Niacinamide concentration and barrier-supporting ingredients compared.

May 19, 2026 6 min read

Skincare

Caffeine, niacinamide, and peptides compared for dark circles and puffiness.

May 19, 2026 6 min read

Skincare

Hydrolyzed quality, dose, and added skin nutrients compared for firmness.

May 19, 2026 6 min read

Skincare

Oral hyaluronic acid for skin hydration and joint lubrication — top picks.

April 18, 2026 5 min read