Retinal vs. retinol: where to start
Why retinal works faster, and how to start gently.
1 minute to read
Two steps closer to retinoic acid
Skin has to convert every retinoid into retinoic acid before it can use it. Retinol takes two conversion steps to get there; retinal (retinaldehyde) takes only one. That shorter path is why retinal tends to show results on fine lines and uneven texture sooner, often within eight to twelve weeks.
Which one suits you
If you have never used a retinoid, a low-strength retinol or a gentle retinoid ester is the easiest start. If you already tolerate retinol well and want to step up, retinal is the natural next move. Sensitive or very dry skin usually does better starting low and slow with either.
Start with two evenings a week, and only add more once your skin stays calm.
How to introduce it
Apply a pea-sized amount to dry skin in the evening, after cleansing and before moisturiser. Leave a few days between uses at first. Some dryness or flaking in the first weeks is normal; stinging that doesn't settle is a sign to slow down.
Protect the results
Retinoids make skin more sensitive to the sun, so a broad-spectrum SPF 30 or higher every morning is not optional. Skip retinoids while pregnant or breastfeeding, and avoid pairing them with strong exfoliating acids on the same night.