Beauty editor Georgia Day has put eight retinol formulas to the test over a minimum of one month each, evaluating their effects on firmness, radiance, and overall skin health. Retinol, a derivative of vitamin A, is widely regarded as the gold standard in anti-ageing ingredients, addressing dullness, slackening contours, tone, texture, and enlarged pores.
Confusion around retinol and other vitamin A actives persists. “Retinoids are essentially a family of vitamin A molecules,” explains Daniel Isaacs, chief product officer and co-founder at Medik8. “The main difference between them is how many steps they need to go through in the skin before they reach retinoic acid, which is the active form of vitamin A. The skin's cellular receptors can only directly recognise and bind to retinoic acid, so all forms need to be converted by the body first before they can be used. So, retinol needs to convert first to retinal and then to retinoic acid, whereas retinal only has that final conversion to make. Prescription retinoids, such as tretinoin, are retinoic acid, so they don’t require any conversion at all,” he adds.
Best Retinols at a Glance
Best overall – Medik8 Crystal Retinal 6: £55, Lookfantastic.com
Best budget – The Ordinary Retinol 0.2% in Squalane: £7.20, Sephora.co.uk
Best for beginners – Skin Rocks Retinoid 1 Vitamin A Face Serum: £70, Skinrocks.com
Best for breakout-prone skin – Sunday Riley A+ High-Dose Retinoid Serum: £70, Marksandspencer.com
Best for dry skin – Dr Sebagh Retinol Night Repair: £72, Harrods.com
For those new to retinoids, Isaacs advises against assuming that higher concentrations yield better results. “It really comes down to what your skin is used to. If you’re completely new to vitamin A, I’d start low and build up gradually – that gives the skin time to acclimatise and is much more likely to keep you using it consistently. If you’ve been using retinoids for some time and your skin is comfortable with them, then you can start moving through higher concentrations. But I wouldn’t rush it.”
How to Use Retinol Safely
Frequency of use is critical, especially for beginners. Although irritation can occur, modern formulations often mitigate it. “The most common mistake I see is people going too hard, too quickly,” says Isaacs. “There’s a temptation with retinoids to think that using the highest strength every night will get you better results faster, but that’s really not the case. Your skin needs time to acclimatise. I always recommend starting with a strength that’s appropriate for your skin and introducing it gradually. Twice a week for the first two weeks, then every other night for the next two, before working up to nightly use if your skin is comfortable.”
If redness, tightness, or peeling occurs, ease off and allow skin to recover before reintroducing. Retinol is a long-term game, not a quick fix. Choosing a stabilised formula with an effective delivery system, such as encapsulation technology, is essential, particularly for sensitive skin. Retinoids increase sun sensitivity, so daily SPF is non-negotiable. Pregnant, breastfeeding, or trying-to-conceive individuals should avoid all vitamin A and consider plant-based alternatives.
Tested Retinol Formulas
Medik8 Crystal Retinal 6 (★★★★★) – Best overall. Uses a retinaldehyde complex 11 times more powerful than traditional retinol, with soothing vitamin E and glycerin. Visible results in two weeks: brighter tone, reduced pigmentation, improved firmness. No irritation. Key ingredients: 0.06% retinaldehyde, vitamin E, glycerin. £55, Lookfantastic.com.
The Ordinary Retinol 0.2% in Squalane (★★★★☆) – Best budget. Gentle, effective for beginners, tackling fine lines, enlarged pores, dullness, and dark spots. Scent is overpowering, but exceptional value. Key ingredient: squalane. £7.40, Sephora.co.uk.
Sunday Riley A+ High-Dose Retinoid Serum (★★★★☆) – Best for breakout-prone skin. High-strength with encapsulated retinol and soothing botanicals. Reduced breakouts around the chin and brightened hyperpigmentation. Not for sensitive skin or beginners. Key ingredients: 5% retinoid ester blend, 1% liposomal-encapsulated retinol blend, 0.5% blue-green algae, encapsulated CoQ10, Hawaiian white honey, bisabolol, cactus extract, ginger. £70, SpaceNK.com.
Skin Rocks Retinoid 1 Vitamin A Face Serum (★★★★☆) – Best for beginners. Gentle entry-level retinol by Caroline Hirons. Hydrated, cushioned feel; improved skin uniformity and brightness. Too mild for experienced users. Key ingredient: 0.2% hydroxypinacolone retinoate (HPR). £70, Skinrocks.com.
Naturium Retinol Complex Serum (★★★★☆) – Best for gentle refresh. Combines retinol with plant-derived actives. Left skin plump and bright, improved texture. Watery formula. Key ingredients: bio-retinol, encapsulated retinol, bakuchiol. £22, Boots.com.
Dr Dennis Gross Advanced Retinol + Ferulic Serum (★★★★★) – Best for congested skin. Retinol with ferulic acid for antioxidant and anti-inflammatory benefits. Reduced redness, refined texture, kept breakouts at bay. Contains AHAs, may be aggressive for sensitive skin. Key ingredients: retinol, ferulic acid, bakuchiol, rambutan, salicylic acid, linoleic acid, glycolic acid, squalane, hyaluronic acid. £76, Cultbeauty.co.uk.
Dr Sebagh Retinol Night Repair (★★★☆☆) – Best for dry skin. Oil-rich base mitigates irritation. Nourishing, comforting on dehydrated skin; slower results, but reduced appearance of enlarged pores. Not for oily or breakout-prone skin. Key ingredients: 0.3% retinol, rosehip oil, vitamin E, coconut oil, squalane. £72, Harrods.com.
Innbeauty Project Retinol Remix 1% Retinol Treatment (★★★★☆) – Best for all skin types. Three types of retinol for slow-release effect, with peptides and tranexamic acid. Improved fine lines and wrinkles, supple, even-toned skin. Key ingredients: 1% vegan retinol, peptide, tranexamic acid, centella asiatica, Tazman pepper™, German chamomile. £58, Sephora.co.uk.
In conclusion, the Medik8 Crystal Retinal 6 stood out for delivering on multiple issues with visible improvement, while the Dr Dennis Gross Advanced Retinol + Ferulic Acid excelled with its acid and antioxidant blend. For beginners, The Ordinary Retinol 0.2% in Squalane offers an excellent all-rounder starting point.
