RETINOIDS

Tretinoin

Also known as: Retinoic Acid, All-trans retinoic acid, Retin-A

pH 5.5-6.00.025% (starter), 0.05% (standard), 0.1% (high strength)

What is Tretinoin?

The prescription-strength, active form of Vitamin A. Unlike retinol, it doesn't need conversion and works immediately on skin cells. It's the most potent and researched anti-aging ingredient available.

✅Key Benefits

  • ✓Reduces wrinkles by 40-60% (clinical studies)
  • ✓Dramatic improvement in skin texture and tone
  • ✓Treats moderate to severe acne
  • ✓Fades severe hyperpigmentation and melasma
  • ✓Rebuilds collagen structure
  • ✓Reverses photoaging
  • ✓FDA-approved for anti-aging and acne

🎯Best For

Severe agingStubborn acneDeep wrinklesMelasmaSevere sun damage

📋How to Use

Prescription required. Apply pea-sized amount to dry skin 20-30 min after cleansing (PM only). Start 2x per week, increase slowly. Expect significant "retinization" - peeling, dryness, redness for 4-6 weeks. Buffer with moisturizer if needed.

⚗️RECOMMENDED CONCENTRATION: 0.025% (starter), 0.05% (standard), 0.1% (high strength)

⚠️Avoid Mixing With

  • ✕AHAs
  • ✕BHAs
  • ✕Benzoyl Peroxide
  • ✕Vitamin C (L-AA)
  • ✕Other retinoids
  • ✕Physical exfoliants

💚Pairs Well With

  • ✓Niacinamide
  • ✓Hyaluronic Acid
  • ✓Ceramides
  • ✓Azelaic Acid (separate times)

🚫Avoid If

  • ⚠Pregnant or breastfeeding (Category C)
  • ⚠Planning pregnancy
  • ⚠Eczema
  • ⚠Rosacea

🔬Scientific Evidence

FDA-approved since 1971. Over 2,000 studies. Gold standard for photoaging reversal. Kligman's 1986 study revolutionized anti-aging skincare. Proven to increase dermal collagen by 80% and reduce fine lines by 44% in 48 weeks.

⚡Important Warnings

  • !MANDATORY SPF 50+ - extremely photosensitizing
  • !Severe purging possible (3-4 months)
  • !Can cause contact dermatitis
  • !Never use during pregnancy/breastfeeding
  • !Requires dermatologist monitoring
  • !May trigger rosacea flares

💡Fun Facts

  • ★Discovered in 1943, medical use started in 1971
  • ★Results plateau around 1 year, then maintain
  • ★Generic tretinoin costs $20-80, branded Retin-A $200+
  • ★Can make skin look worse before better (the "tretinoin uglies")

Want to Check Your Routine?

Analyze your full skincare routine for conflicts with Tretinoin and other actives