Glycolic Acid vs. Lactic Acid: Which Is Better for Dark Spots?

In this skincare Q&A, dermatologist Dr. Dray answers questions from her followers about exfoliating acids, tretinoin, skin barrier care, wound dressings, humidifiers, and isotretinoin prescribed through direct-to-consumer telehealth services. Can 12% glycolic acid or 12% lactic acid help with friction-related hyperpigmentation and uneven skin tone? Is it necessary to seal in AmLactin or tretinoin with an occlusive moisturizer? Can adding glycerin to a humidifier improve skin hydration? What should people with sensitive skin or suspected adhesive allergies use to cover wounds? Dr. Dray also discusses concerns surrounding online isotretinoin prescriptions, patient safety, medical screening, and the marketing of prescription skincare treatments. This dermatologist Q&A explores practical, evidence-informed skincare advice and helps clarify common questions about skincare ingredients, skin irritation, wound care, and prescription acne treatments. TIMESTAMPS 0:00 Intro 0:11 12% Glycolic Acid vs. 12% Lactic Acid for Friction Hyperpigmentation and Uneven Skin Tone 2:11 Should You Seal in AmLactin or Tretinoin With an Occlusive Moisturizer? 3:58 Can You Add Glycerin to a Humidifier for Skin Hydration? 5:16 Wound Care for Latex Allergies and Reactions to Bandages or Medical Tape 7:11 Isotretinoin Through Direct-to-Consumer Telehealth: A Dermatologist's Concerns 9:49 Outro Subscribe for more dermatologist skincare Q&As, skincare ingredient explanations, product reviews, acne treatme