Retinol (Vitamin A) Cream

In brief

Retinol (vitamin A) is one of the most effective and well-studied anti-aging ingredients in skincare.
👉 It improves skin texture, fine lines, and overall appearance over time.
👉 Proper introduction and patience are essential.

🟢 What it does (main evidence)

• Accelerates cell turnover.
• Improves fine lines and skin texture.
• Stimulates collagen production.

🟡 What is unclear

• Tolerance varies widely between individuals.
• Results require weeks to months.

🔴 What it does NOT do

• Does not work overnight.
• Does not replace sunscreen.
• Is not suitable for immediate daily use on sensitive skin.

Concentrations & forms

• 0.1–1% retinol.
• Retinal and prescription retinoids are stronger.

💣 Practical upper limit

Note: concentrations above $≈ 0.3–1% (retinol) increase irritation
without proportional gains.

Safety

• Use only at night.
• Always apply sunscreen during the day.

Practical usage tips

• Start 2–3 nights per week.
• Always moisturize after application.

Sources