Retinal and retinol get used interchangeably online, but they're not the same ingredient.
Both are vitamin A derivatives. Both support collagen production, smoother texture, and a more even tone. But they sit at different points in the skin's conversion process, and that difference changes how they perform.
What's the Actual Difference Between Retinal and Retinol?
Retinol has to convert twice before it becomes active in skin: first to retinal, then to retinoic acid.
Retinal only needs one conversion step, since it's already the form that sits just before retinoic acid. That shorter pathway means retinal tends to work faster and more efficiently at lower percentages than retinol.
In practical terms, a low-percentage retinal serum can perform similarly to a much higher-percentage retinol product, without needing the extra conversion step retinol requires.
Why Does the Conversion Pathway Matter for Skin Over 40?
Skin's ability to process and convert ingredients slows down with age, alongside slower cell turnover overall.
A retinoid that requires fewer conversion steps has less work to do inside the skin before it becomes active. That matters more as skin's natural processes become less efficient, which is part of why retinal is often better tolerated by mature or sensitive skin than higher-strength retinol.
Is Retinal Stronger or Just More Efficient Than Retinol?
Both. Retinal isn't simply "retinol but stronger" — it's structurally closer to the active form skin cells actually use.
Faster visible results. Because retinal skips a conversion step, it can start showing improvements in texture and tone sooner than an equivalent retinol product.
Effective at lower percentages. A lower-percentage retinal formula can deliver comparable benefits to a much higher-percentage retinol, without the added irritation that often comes with high retinol strength.
Generally better tolerated. Because less conversion is required, retinal tends to cause less irritation for the same level of effectiveness — a meaningful difference for skin that's already more reactive.
What Makes Apothekari's Retinal Different?
Not all retinaldehyde is formulated the same way.
Advanced+ Renewal uses IconicA®, a patented form of retinaldehyde designed to perform close to prescription-strength retinoic acid while remaining gentle enough for daily use — including for skin that has reacted poorly to other retinoids in the past.
FAQ
Is 1% retinol the same as 1% retinal?
No. Retinal's effectiveness isn't determined by percentage alone. A lower percentage of retinal, such as the IconicA® used in Advanced+ Renewal, can deliver results comparable to a much higher percentage of traditional retinol.
Can retinal be used on sensitive skin?
Yes, often more successfully than retinol. Because retinal requires one fewer conversion step in the skin, it tends to be better tolerated, and many people who react to other retinoids find they can use a well-formulated retinal serum instead.
Should retinal or retinol be used in the morning or at night?
Both should be used at night. Retinoids are sensitive to sunlight and can increase skin's sensitivity to UV exposure, so daily sunscreen is essential the following morning regardless of which retinoid is used.
How long does it take to see results from retinal?
Because retinal requires less conversion in the skin, visible improvements in texture and tone often appear sooner than with retinol — though consistent use over several weeks is still needed for full results.
If your skin hasn't tolerated retinol well, or you're ready for a retinoid that works with fewer steps, it may be worth switching forms rather than strength.
Meet Advanced+ Renewal, our retinaldehyde serum formulated with IconicA® and niacinamide to visibly reduce fine lines and support skin renewal — gentle enough for daily use, even for skin that has struggled with other retinoids.
