What is retinol?
Retinol is the most well-known vitamin A derivative and the most widely used in cosmetics. When you apply it, your skin transforms it in two steps: first into retinal, and then into retinoic acid, which is the molecule that truly "tells" the skin to renew itself, produce collagen, and even out tone.
This double step has a consequence: it loses potency along the way. Retinol works, but more slowly and gently. It's a good entry point into the world of retinoids, especially if you've never used vitamin A before.
What is retinal (retinaldehyde)?
Retinal, or retinaldehyde, is one step ahead of retinol in the conversion chain. Your skin only needs one more transformation to convert it into retinoic acid, so the effect is more direct and faster.
The interesting thing is that, despite being considerably more potent, studies show that retinal is better tolerated than its strength would suggest: its irritation level is closer to that of retinol than to tretinoin (the prescription retinoid). That's why more and more anti-aging and anti-acne formulas are choosing it.
Retinal vs retinol: comparison table
| Retinol | Retinal (retinaldehyde) | |
|---|---|---|
| Steps to activate | 2 conversions | 1 conversion |
| Potency | Moderate | Up to ~10× that of retinol |
| Speed of results | Slower (8–12 weeks) | Faster |
| Tolerance | Usually gentle | Good for its potency; suitable for many sensitive skin types |
| Ideal for starting | Yes, beginners | Better if you already tolerate retinol or want faster results |
| Pregnancy / lactation | Not recommended | Not recommended |
Which is better for you?
There's no universal winner; it depends on your skin and your goal:
- You've never used vitamin A: start with retinol at a low concentration, 2–3 nights a week, to let your skin get used to it.
- You want faster results for wrinkles, texture, or dark spots and already tolerate retinol well: retinal will give you more, sooner.
- Sensitive or reactive skin: retinal might surprise you with its good tolerance, but introduce it slowly. And if you want to completely avoid any risk of irritation, keep reading.
The natural alternative: bakuchiol
At Biovardi, we are committed to natural and non-toxic cosmetics, so here's the part almost no one tells you: there's a plant-based active ingredient that mimics many of the benefits of retinoids without their side effects. It's bakuchiol, extracted from the Psoralea corylifolia plant.
Bakuchiol helps improve firmness, fine lines, and tone, but it doesn't irritate, dry out, or increase photosensitivity like retinol and retinal do. That's why it's the favorite option for sensitive skin, pregnant women (always consulting your doctor), and those who prefer natural-origin formulas.
Bakuchiol Serum — Esse Skincare
The "natural retinol": firmness and fine lines without irritation or photosensitivity. Suitable for sensitive skin.
View bakuchiol serumIf you want to delve deeper, we cover it in our article Bakuchiol: the "natural retinol" that cares for your skin without irritation.
How to introduce a retinoid without irritating your skin
- Start slowly: 2 nights a week for the first fortnight and gradually increase.
- Apply at night to dry skin, after cleansing.
- Accompany with hydration: a repairing cream minimizes initial flaking.
- Sun protection every morning, without exception. Retinoids increase sun sensitivity; without SPF, you lose all gains.
- Be consistent: real results are seen after 8–12 weeks of continuous use.
Important precautions
Neither retinol nor retinal are recommended during pregnancy or breastfeeding. It's also not advisable to combine them in the same routine with potent exfoliating acids (AHA/BHA) or pure vitamin C without careful consideration, as you can irritate the skin. If you have any doubts, or if you have a dermatological condition, consult your dermatologist or pharmacist before incorporating them.
Frequently asked questions
Is retinal better than retinol?
It's more potent and faster because it requires one less conversion to become active. "Better" depends on your skin: for beginners, retinol is more cautious; for faster results, retinal wins.
Does retinal cause a lot of irritation?
Less than its potency would suggest. Its tolerance is similar to that of retinol, but it should be introduced gradually.
Can I use retinal or retinol during pregnancy?
No. Retinoids are not recommended during pregnancy and breastfeeding. The natural alternative is bakuchiol, always consulting your doctor.
How long does it take to see results?
Improvements are usually noticed after 8–12 weeks of consistent use, always with daily sun protection.
Is there an option without irritation or photosensitivity?
Yes: bakuchiol, a plant-derived active ingredient that offers similar benefits without the typical side effects of vitamin A.