Retinaldehyde vs Tretinoin for Sensitive Mature Skin

Retinaldehyde, often called retinal, is gentler than prescription tretinoin. In a 44-week tolerance study, redness, flaking and burning in the first month were significantly less common with retinaldehyde. Tretinoin is the best-studied retinoid for wrinkles and sun spots, with trial results lasting up to two years. For sensitive mature skin, the option with the most proof is tretinoin, started slowly with your clinical team. Retinaldehyde makes sense if tretinoin keeps irritating your skin.

Which works better on wrinkles, retinaldehyde or tretinoin?

Tretinoin has the stronger record. A review of retinoid anti-aging studies calls tretinoin the gold standard: it is the most potent and best-studied retinoid. Some tretinoin creams are approved as prescription medicines for facial wrinkles and dark spots.

A review of 7 randomized trials, with women making up all or most of the participants, found that tretinoin improved wrinkles, blotchy pigment, sallowness and sun spots. Improvement showed as early as 1 month and was still there at 24 months. In a 2-year trial of 204 people, 0.05% tretinoin cream once a day was safe and effective.

Only one study has compared the two directly, at 0.05% each. Both improved wrinkles and roughness, and neither came out significantly ahead of the other. Retinaldehyde also did not come out significantly ahead of the plain base cream, so that study does not show retinal working as well as tretinoin.

Retinaldehyde has encouraging results of its own. In a 24-week split-face study of 56 women aged 30 to 58, retinaldehyde made the deeper layer of the skin denser, improved elasticity and reduced wrinkles. The 0.1% strength did best, and women tolerated it well. That study had no tretinoin group.

How retinal is sold also matters. Retinal serums are cosmetics, so they don't have to pass the safety and effectiveness testing a medicine goes through before it reaches shelves. Retinaldehyde also breaks down easily in light and air, so how well a serum works depends on how it is formulated.

Is retinaldehyde gentler than tretinoin on sensitive skin?

Yes. In the 44-week study of 355 people, 44% of people on tretinoin got redness in the first four weeks, 35% got flaking and 29% got burning or itching. All three were significantly less common with retinaldehyde.

The difference comes from how your skin handles each one. When you apply retinaldehyde, your skin turns most of it into a storage form and converts only a small amount into tretinoin. Tretinoin's irritation is thought to come partly from flooding the skin's retinoid receptors all at once, and retinaldehyde avoids that.

Irritation can make women give up on tretinoin. In the head-to-head study, tretinoin caused more irritation and fewer people kept using it. An older review of tretinoin's side effects found that most people on 0.05% tretinoin cream developed irritated, fragile skin and needed longer gaps between applications.

Those longer gaps are useful. Spacing out tretinoin is how women with sensitive skin get to keep the option with the most proof.

How do you start tretinoin if your skin is sensitive?

• Use it at bedtime, every other night at first. The tretinoin label says to apply it once a day before bed. If your skin is sensitive, your prescriber may start you every other night and build up to nightly.
• Apply it to fully dry skin. Wash with a mild soap, pat dry and wait 20 to 30 minutes before you apply it. Use only the amount you're told to use, because extra cream irritates without giving faster or better results. Keep it away from the corners of your nose, mouth and eyes.
• Pause the harsh stuff. Be careful with drying soaps, alcohol-heavy products and anything with salicylic acid, sulfur or resorcinol while you're on tretinoin. If your skin gets very irritated, the label says to use it less often, pause it or stop.
• Wear sunscreen and limit time in the sun. Tretinoin makes your skin burn more easily. Wind and cold can also irritate it.
• Tell your clinical team about eczema or pregnancy. Tretinoin can badly irritate skin with eczema. The label lists it as Pregnancy Category C and notes thirty reports of birth defects in babies of women who used it, though no link to tretinoin was established. Mention it if you're pregnant or trying.
• Plan to keep going. Tretinoin's results fade after you stop, so it works as a long-term habit. Our clinical team can prescribe tretinoin if it fits your skin and your goals.

When should you pick retinaldehyde instead of tretinoin?

Retinaldehyde makes sense when tretinoin keeps irritating your skin even at the slower pace, or when eczema makes tretinoin a poor fit. Make that call with your clinical team.

If you go with retinal, choose the strength carefully. In a 3-month study of 40 Korean women who applied it twice a day, both strengths smoothed texture (by 13.7% at 0.1% and 12.6% at 0.05%) and added hydration. Only 0.1% made a significant difference to pigment, lowering it by 6.5%. That study had no plain-cream group to compare against.

Retinal's studies are smaller and shorter than tretinoin's, so choosing it means giving up some proof for comfort. If tretinoin has never let your skin settle, that can be the right choice.

Will tretinoin or retinal fix sagging skin?

No. Neither cream lifts sagging skin. The tretinoin trials reported improvement in wrinkles, blotchy pigment, sallowness and sun spots, not in lost volume or jowls.

One woman on Reddit posted about "Lower face sagging at 37 despite years of tretinoin, SPF and healthy lifestyle." She had used tretinoin for about 10 years. The top reply, with 1,741 upvotes, said:

no amount of creams and “drink more water” suggestions will stop volume loss.

Use a retinoid for lines, texture and spots, and bring sagging to your clinical team as a separate goal.

If you want the retinoid with the most proof on lines and spots but your skin is easy to upset, take the quiz. Our clinical team will see whether tretinoin fits your skin and how slowly to start it.