Beauty & Skincare Does the 12/3/30 actually work? March 6, 2026 by Mercier | Leave a Comment The 12/3/30 rule is a popular skincare regimen that claims to improve skin texture and clarity. It involves using a glycolic acid toner daily, followed by a moisturizer twice a day, and a retinol three nights a week. While many users report positive results, its effectiveness depends on individual skin types and consistent application. Unpacking […] Read more ยป