The ESK blog
Why retinaldehyde (retinal) is the most effective form of vitamin A for aging skin
02 June 2026
Dr Anne Thomson
Written by Dr. Anne Thomson
If you’re interested in anti-aging skincare then chances are you’ve heard of vitamin A. Vitamin A is the undisputed king of anti-aging skincare, with decades of solid scientific evidence backing its effectiveness at reducing fine lines and wrinkles, improving skin thickness and elasticity and reducing age spots (pigmentation).
Vitamin A-derived ingredients (collectively known as retinoids) in skincare come in many forms which can be confusing, especially since many of them have similar sounding names! Retinoic acid, retinol, retinyl palmitate… and one you may not have heard of yet, retinaldehyde.
Retinaldehyde (also shortened to retinal) is quickly becoming the smart choice for the evidence-conscious consumer who is looking for an over-the-counter retinoid with clear and proven advantages over its old school cousins like retinol. As effective as prescription-strength retinoic acid without the side effects, 11 times faster acting with better results than retinol and gentle enough for sensitive skin, retinal is ticking all the boxes as the most effective and best tolerated form of vitamin A for aging skin.
Read on to find out how and why retinaldehyde is delivering real results and just how simple it is to incorporate into your anti-aging skincare routine.
What is retinaldehyde and why does the form of vitamin A matter?
Retinaldehyde is part of a larger group of vitamin A derivatives known as retinoids. Like other retinoids it has significant anti-aging effects such as reducing fine lines and wrinkles and improving skin tone and elasticity. It does this by:
· stimulating collagen production
Retinoids are also great at unclogging pores and controlling sebum production which makes them the mainstay of acne treatment; retinal specifically has been shown to have anti-bacterial qualities, making it the ideal pick for break-out prone skin.
Here is why the form of vitamin A matters:
Retinoic acid (aka tretinoin) is the gold standard for anti-aging vitamin A derivatives – only available on a doctor’s prescription, it has been around for decades and is very effective at treating most of the signs of aging in the skin. It is so potent (enough to require medical supervision!) that it unfortunately comes with a high rate of side-effects. Irritation, redness and burning are common - up to 60% in some studies - meaning a significant number of people give up on it. No product is going to work if it’s in the bin!
Over-the-counter forms include retinal, retinol and retinyl palmitate. Generally speaking, these retinoids are not as potent and therefore don’t have the high rate of side-effects. With the exception of retinaldehyde, the price paid for this decrease in side-effects is a decrease in effectiveness. And the evidence bears this out – a recent review of the best quality studies on retinol concluded that it probably doesn’t do much at all!
Retinaldehyde on the other hand, stands out. Studies show that it is as effective as prescription-only retinoic acid but without the side effects. And compared to retinol and retinyl, it gives superior results and works much faster.
And we think we know why – all retinoids need to be converted into retinoic acid in the skin to have any effect. Retinoic acid is the active form of vitamin A that triggers all the beneficial effects. For the skin nerds (like us), here’s the conversion pathway:
Retinyl palmitate → Retinol → Retinal → Retinoic acid
Retinaldehyde is the direct precursor to retinoic acid, it only needs to go through one step to become active. Retinol needs two and retinyl needs three. This makes retinal the most efficient of all the retinoids AND more potent; you need less of it to make it work, which also means less side effects. Win-win!
Retinaldehyde vs retinol: what the peer-reviewed studies show
An increasing body of scientific research is demonstrating some clear advantages to retinal over retinol:
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Faster conversion to retinoic acid: As we’ve seen, retinal is only one step away from the active retinoic acid, making it work 11 times faster than retinol.
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Similar efficacy to prescription retinoids with fewer side effects: Studies show that retinal offers almost identical anti-aging benefits to tretinoin, without the irritation. Retinol on the other hand, only has patchy evidence of little to no benefits with some people experiencing similar side-effects to tretinoin, known as “retinol burn”. Ouch.
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Retinal supports the skin barrier - great news for sensitive skin - whereas retinol has been shown to disrupt the skin barrier.
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Anti-bacterial: Retinal has unique anti-bacterial effects against the acne-causing C. acnes, making it the better choice for acne-prone skin.
Is retinaldehyde better tolerated than retinoic acid?
Retinoic acid (prescription only) has a large body of evidence for effectiveness against most of the signs of aging in the skin, but the rate of side-effects is high. Hence the need for medical supervision, including strict instructions on how to gradually introduce it; many users can’t tolerate it at all. Even over-the-counter retinol can be associated with similar side-effects (known as “retinol burn”).
Retinal on the other hand, has demonstrated excellent tolerability, even in people with sensitive skin - including those with rosacea. This is great news for anyone interested in anti-aging skincare but particularly those with sensitive skin for whom, until now, vitamin A skincare has been off the menu!
How to use retinaldehyde for aging skin: what the evidence recommends
Here’s your evidence-based guide to incorporating retinal into your existing anti-wrinkle aging skincare routine:
The Dos and Don’ts:
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Use retinal serum or cream at night:
Retinal breaks down in UV light, so apply it at night.
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No need to start slow:
If your skin isn’t super sensitive, you can usually start with nightly use. -
Use sunscreen every day:
Retinal can increase sun sensitivity, so wear a broad-spectrum, non-comedogenic sunscreen, ideally with zinc oxide. -
Don’t double up on retinoids:
Check you’re not already using another retinoid such as retinol or retinyl. -
Choose the right concentration:
Use a minimum 0.06% for sensitive or dry skin, and 0.1% for all other skin types. -
Don’t use vitamin A skincare while pregnant.
A simple night routine:
Apply your retinal serum or cream as the final step in your night routine:
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Cleanse with a gentle, soap-free cleanser.
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Optional: Exfoliate gently with an AHA or PHA serum; skip the AHA if your skin is very sensitive.
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Apply your retinal night serum or cream.
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Finish with a moisturiser if needed.
Which ESK night cream is right for you?
|
Product |
Retinal% |
Best for |
Key actives |
|
0.06% |
Super sensitive, reactive skin |
Niacinamide |
|
|
0.1% |
All skin types incl. sensitive, rosacea, dry and pigmented skin |
Niacinamide, PHAs, Ceramides, Hyaluronic Acid, Ectoin, 4-N-Butylresorcinol |
|
|
0.1% |
Normal, oily and breakout-prone skin |
Niacinamide, AHAs |
Frequently asked questions
1. Is retinaldehyde (retinal) better than retinol?
Retinaldehyde has several advantages over its old school cousin retinol including:
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faster and better results
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less side-effects (if any!)
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has unique anti-bacterial activity against C. acnes, great for break-out prone skin.
2. What percentage of retinaldehyde is effective for anti-aging?
Studies show you want a minimum of 0.05% for anti-aging benefits for super sensitive, reactive skin, and 0.1% for all other skin types.
3. Can I use retinaldehyde every night?
Because retinal is much gentler on the skin than other retinoids, most people find they can use it every night from day one. Make sure you go through the dos and don’ts listed above.
Tips for extremely sensitive skin:
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Choose a lower concentration (minimum 0.5%)
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Start slow. Apply every third night at first, then gradually increase to every other night as your skin adjusts.
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Moisturise, moisturise, moisturise! Layer over a hydrating serum or moisturiser with skin barrier-building ingredients like niacinamide, panthenol and ceramides.
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Pair it wisely. Skip harsh exfoliants like high concentration AHA serums on nights you use retinal cream to avoid overloading your skin.
4. How long does retinaldehyde take to work?
Some studies show visible results within a few weeks, most show best results by the 8-12 week mark. The key to this of course, is consistency and following the dos and don’ts - especially daily sunscreen.
5. Is retinaldehyde safe for sensitive skin?
Yes, generally retinal is the top retinoid pick for sensitive skin, with many studies demonstrating superior tolerability (without sacrificing results) over prescription and other retinoids. Super-sensitive skin types might want to introduce it gradually (see the tips for sensitive skin above).
6. Can you use retinaldehyde when pregnant?
No - vitamin A based oral medicines (e.g. Accutane) have been associated with birth defects; whilst newer topical retinoids have demonstrated little to no absorption into the blood stream, to be extra safe, it is still recommended they be avoided during pregnancy.
7. What is the difference between retinal and retinaldehyde?
The only difference is 6 extra letters! Retinal is simply the shortened term for retinaldehyde, they are the same ingredient. Just make sure not to confuse retinAl with retinOl.
8. Does retinaldehyde help with age spots?
Age spots are those pesky flat, oval shaped areas of increased pigmentation that increase in number as we get older (thanks mostly to cumulative UV exposure) and are notoriously difficult to treat once they appear. Luckily, retinal targets many of the steps in the process that leads to the formation of age spots. All retinoids can do this but retinal has the advantage of being faster acting with better results and less side-effects.
Ultimate A
Ultimate A Night Cream contains 0.06% Retinal, the most gentle and effective form of Vitamin A, paired with Niacinamide to help maintain skin barrier function and support brighter, firmer and more even looking skin tone and texture. Well suited even for the most irritable skin.
Key features:
- 0.06% Retinal to support a brighter, smoother and firmer skin texture
- Niacinamide to support skin barrier function and a more even looking skin tone
- Gentle formulation suitable for nightly use
Usage: Apply at night after cleansing (and serum if being used) as part of your evening skincare routine.
Ultimate A Gold
Ultimate A Gold: the most effective and gentle ingredients that evidence based cosmeceutical skincare has to offer, in one revolutionary formula.
The game-changing night cream developed in partnership with Selma Blair - combines our most potent hero ingredients to effectively and gently tackle the most common skin concerns – in one product.
Tackling the signs of aging skin including fine lines, skin elasticity, impaired barrier function, hydration, dullness and uneven skin tone. it is our most powerful product yet and yet it’s still ridiculously well tolerated.
Wake up to skin that's supple, smoother, and softer.
For the most irritable of skin, Ultimate A may be a better option, particularly when starting to use Retinal based products
*Ultimate A Gold (Retinal) may transfer onto white or light-coloured fabrics. For best results, we recommend using darker clothing or surfaces to avoid visible marks.
Ultimate A+
Building on the proven performance of Ultimate A, Ultimate A+ Night Cream is designed for those looking to refine texture and tone or support skin prone to congestion. With 0.1% Retinal (the next-generation form of Vitamin A), Niacinamide, and 2% Glycolic Acid, this formula delivers visible improvements while remaining gentle and well tolerated.
This unique combination supports smoother-looking skin, helps refine the appearance of pores and uneven tone, and promotes a more hydrated, balanced complexion.
Featuring:
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Potent yet gentle formulation suitable for daily use
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Helps improve the appearance of uneven tone and texture
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Supports firmer, more supple-looking skin
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Formulated with evidence-based ingredients known to enhance skin clarity
Note: Retinal is not suitable for use during pregnancy.
