Your guide to retinoid and retinol strengths Topical retinoids, including retinol, are research-proven anti-ageing powerhouses that can benefit nearly everyone’s skin. But it isn’t all about a youthful look. They also visibly improve uneven tone, refine texture and support clearer-looking skin, and they’re available in formulas suited to different skin types and experience levels. But their use comes with questions: What strength should you use? When and how often should these formulas be applied? Is a higher percentage always better? As always, we’ll give you the research-based answers. Retinol vs retinoid strength: what’s the difference? Retinoid is the umbrella term for all vitamin A derivatives. Retinol is one form, and one of the most well-known. Other forms include retinyl esters and retinaldehyde, also called retinal. All retinoids must convert in the skin into retinoic acid, the form skin cells respond to. The number of conversion steps matters because it affects both potency and speed of results. This means 0.1% retinol is not equal to 0.1% retinal. The pathway determines performance. Retinol vs retinal: how do they differ? Retinol and retinal are both highly effective, but they work slightly differently. Retinol requires two conversion steps: retinol → retinal → retinoic acid Retinal (retinaldehyde) requires only one conversion step: retinal → retinoic acid Because retinal is one step closer to retinoic acid, it works more directly in the skin. This makes it more potent gram-for-gram than retinol and capable of delivering faster visible results. In simple terms: retinal is the more advanced, efficient form of vitamin A available without a prescription. Different retinal & retinol strengths Retinoids are not one-strength-fits-all. The best choice depends on your experience level, skin tolerance and goals. Beginner retinol formulas You don’t need a high concentration of retinol to see visible results. Research shows retinol products, even those with lower strengths, can improve signs of ageing, refine pores and support smoother-looking skin. Here is some advice for retinol beginners: When to choose a beginner retinol You’re new to retinoids You have sensitive skin You want to address early signs of ageing You prefer a gradual approach Recommended beginner retinol CLINICAL 0.3% Retinol + 2% Bakuchiol Treatment This expertly balanced formula pairs 0.3% retinol with 2% bakuchiol and peptides to visibly target fine lines, wrinkles, enlarged pores and uneven tone, while supporting skin comfort. Bakuchiol helps stabilise retinol and enhance its performance, making this an ideal starting point for those new to vitamin A or returning after a break. It delivers visible results while helping minimise potential irritation, making it the perfect first choice for retinol beginners. To learn more, read our article on retinol against wrinkles. Advanced retinal formulas If you’ve already built tolerance to retinol and want faster, more dramatic visible improvements, an advanced retinoid may be the right move. When to choose an advanced retinal You’ve used retinol consistently without irritation You want to target deeper wrinkles and persistent uneven tone You’re looking for faster visible improvements You want results closer to prescription-level performance Recommended advanced retinal CLINICAL Pro Retinaldehyde Dual-Retinoid Treatment This next-generation formula combines retinaldehyde with oleyl adapalenate (Adapinoid®) to support accelerated cell renewal and visibly improve: Fine lines & deeper wrinkles Texture irregularities Stubborn uneven tone Blemish-prone skin Because retinal works more directly in the skin, this advanced treatment delivers powerful results efficiently, yet is formulated with slow-release and encapsulation technology to optimise tolerability. In short: it’s our most advanced over-the-counter retinoid option. What strength of retinoid should I use? There’s no one-size-fits-all answer. Your skin type, goals and tolerance level matter most. Beginners and sensitive skin types can start with CLINICAL 0.3% Retinol + 2% Bakuchiol, although our CLINICAL Pro Retinaldehyde is formulated to have an advanced strength with gentle delivery, minimising the risk of irritation and delivering visible results faster. Ultimately, the goal isn’t to use the highest percentage possible, it’s to use the most effective strength your skin can tolerate consistently. When to increase retinol strength Retinoid use is a marathon, not a sprint. Jumping too quickly to a higher percentage can cause irritation and slow progress. We recommend you start two to three nights per week and increase gradually as your skin builds tolerance. If irritation occurs, reduce frequency. If you’re using a retinoid in the morning, always follow with broad-spectrum SPF 30 or higher. If you’re satisfied with your results, there’s no need to step up. But if you want faster improvements or are targeting more advanced concerns, transitioning from retinol to retinal can be the next logical step. Retinoid tips & tricks Retinoids can be tricky to apply, tolerate and deliver results. To get the most from your retinoid routine: Choose opaque, airtight packaging to protect stability Avoid fragranced formulas Adjust frequency when combining with exfoliating acids Try the sandwich method, using moisturiser before and after application, if sensitivity arises Avoid during pregnancy or breastfeeding Always wear daily SPF