Medik8
Crystal Retinal 6
7.9Good
A gentle, well-formulated 0.06% retinal night serum for regular vitamin A users, priced well above budget retinal alternatives.
Serum5$87.00
Retinoids· in 1 product
Retinal
Also listed as Retinaldehyde and Hydroxypinacolone retinoate (HPR) is a related but different ester
Moderate evidence 0.05–0.2% OTC
Retinal (retinaldehyde) is a vitamin A form one conversion step away from retinoic acid, so it acts faster than retinol at the same strength. It is sold over the counter and is often marketed as a middle ground between retinol and prescription tretinoin.
1RdRetinalRetinoids
What it does
The short version.
Skin converts retinal directly into retinoic acid, which binds retinoid receptors and speeds cell turnover while supporting collagen. In comparisons it shows retinoid activity at low concentrations with less irritation than tretinoin, and laboratory work suggests retinal also has some activity against acne bacteria. It is chemically less stable than retinol, so airless or opaque packaging matters.
Moderate evidence
Several small clinical studies, mostly from Europe, show improvements in photoaging signs comparable to low-strength tretinoin with better tolerance. Large independent head-to-head trials against retinol are lacking.
In our directory: It’s a key ingredient in 1 product we review, most often serums. Those products are mostly built for fine lines, firming and smoothing. In formulas, it most often shares the label with hyaluronic acid, vitamin e and vitamin c.
Reach for it for
Usually a good fit for
How to use it
Getting it right.
Apply a pea-sized amount at night two or three times a week to start, building up as skin tolerates it, followed by moisturizer. Use daily sunscreen.
Layering
Friends & frenemies.
Pairs well with
Go slow with
Not forbidden — just easier to over-do. Alternate nights or separate morning and evening.
Before you start
Can cause dryness, flaking and stinging, especially when starting. Like other retinoids, avoid during pregnancy or while trying to conceive. Increases the importance of daily sun protection; avoid on irritated or broken skin.
References
- 1Cosmetic retinoid use in photoaged skin: A review of the compounds, their use and mechanisms of action — International Journal of Cosmetic Science (2025), via PubMed
- 2Use of Retinoids in Topical Antiaging Treatments: A Focused Review of Clinical Evidence for Conventional and Nanoformulations — Advances in Therapy (2022), via PubMed
- 3Topical retinoids (vitamin A creams) — DermNet
Educational, not medical advice. Ingredient guides summarise published research and expert guidance; formulas and concentrations differ between products.
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