In consultations, I hear a version of the same story on a near-weekly basis: a client is using tretinoin, convinced it’s the only “real” retinoid worth bothering with, because it’s prescription-only and has the biggest stack of studies behind it. Most of them are also managing ongoing redness, flaking, or irritation they’ve been told to simply push through. And a good number of them aren’t seeing the results they were promised in the first place.

If that sounds familiar, it’s worth understanding what’s actually happening beneath the surface, because it changes the whole conversation about which retinoid is right for you.

Vitamin A Isn’t One Ingredient — It’s a Family

Vitamin A doesn’t exist in the skin as a single substance. It’s a family of related compounds, and tretinoin, retinoic acid, is only the final, most active step in that family. Skin naturally stores the vast majority of its vitamin A in gentler forms: retinyl esters and retinol. It converts these through a chain; retinol to retinaldehyde to retinoic acid, itself, drawing on that stored supply and producing only as much active retinoic acid as it actually needs, at its own pace.

This self-regulating process is the entire point. Skin isn’t designed to encounter large amounts of retinoic acid all at once; it’s designed to manufacture small amounts continuously, on its own schedule.

Why Tretinoin Causes the “Retinoid Reaction

Tretinoin skips that whole process. It applies retinoic acid directly, at full strength, forcing the skin to deal with far more of the active form than it would ever produce on its own in one go. That’s what’s actually behind the “retinoid reaction” so many people are told to expect and push through, the redness, burning, and peeling aren’t a sign the product is “working extra hard.” They’re a sign the skin’s cells are being flooded rather than allowed to adapt gradually.

How Retinol and Retinaldehyde Work Differently

Esters like retinol and retinaldehyde (retinal) work with the skin’s natural pathway instead of around it. The skin still has to convert them into retinoic acid to get the benefit, the same collagen stimulation and cell turnover tretinoin is known for, but because the skin controls that conversion itself, it happens gradually, without the flood, and without the same barrier fallout.

Is Tretinoin Actually the Better Option?

To be fair to tretinoin, it does have the deepest research base, largely because it’s a regulated prescription drug, so far more formal clinical trials have been built around it specifically. That’s a difference in how much it’s been studied, not necessarily proof that it’s the superior choice for every skin.

In my own clinical experience, it’s the esters; retinol, retinaldehyde, and the other forms further up the vitamin A chain, that get most clients to the same result, with far fewer of them ending up needing months of barrier repair afterwards.

If Irritation Has Become the Norm, That’s Worth Reassessing

If tretinoin has left you managing ongoing irritation rather than seeing real benefit, that irritation isn’t something to push through. It’s usually a sign your skin is being asked to process more active vitamin A, faster, than it’s built to handle. There’s often a gentler form further up the chain that can get you to the same outcome without the fight.

Strength and prescription status don’t make a retinoid “better” for you, what your skin can actually process does. If you’re currently gritting your teeth through irritation, it’s worth reassessing which form of vitamin A your skin is genuinely ready for, rather than assuming you have to tolerate the strongest one.

Our Approach to Introducing Retinoids

I very rarely start a new client on a retinoid straight away, most skin simply isn’t ready for it yet. Getting the best results from any form of vitamin A is almost entirely in the preparation: strengthening the barrier first, then introducing the right form, at the right strength, in the right sequence for that individual skin. It’s the difference between a retinoid that delivers results and one that just delivers irritation.

If you’d like your current routine, or a first step into retinoids, looked at properly, that’s exactly what a consultation is for: working out which form of vitamin A, at what strength, and how to introduce it, based on your skin rather than on whatever gets talked about loudest online.

Frequently Asked Questions

Is tretinoin stronger than retinol, and does that mean it works better?

Tretinoin is more potent because it’s the final, most active form of vitamin A, applied directly rather than built up by the skin. Stronger doesn’t automatically mean better results, though — it means a higher likelihood of irritation and barrier disruption, particularly if the skin isn’t adequately prepared first. Many clients achieve comparable long-term results with gentler forms and considerably less downtime.

Why does tretinoin cause more irritation than retinol or retinaldehyde?
Tretinoin bypasses the skin’s natural conversion process and applies active retinoic acid directly and at full strength. Retinol and retinaldehyde require the skin to convert them itself, which happens gradually and at a pace the skin can actually manage — this is generally why they tend to be far better tolerated.

Can retinol or retinaldehyde really achieve the same results as tretinoin?
Yes, in many cases. Both are converted into the same active compound, retinoic acid, inside the skin, which is what drives collagen stimulation and cell turnover. The difference is the route and the pace, not necessarily the ceiling on results — particularly with consistent use over time.

I’m already using tretinoin and struggling with ongoing irritation — what should I do?
Persistent redness, flaking, or irritation isn’t something to simply tolerate long-term, and it doesn’t mean your skin is “detoxing” or adjusting. It’s worth having your skin properly assessed to establish whether a different form or strength of vitamin A, alongside proper barrier support, would suit it better.

How do I know which retinoid is right for my skin?
This depends on your skin’s current barrier health, sensitivity, and prior experience with actives, which is exactly what a proper consultation is designed to establish. There’s no one-size-fits-all answer, the right starting point varies considerably from one skin to another.

Ready to Find the Right Retinoid for Your Skin?

If you’ve been gritting your teeth through irritation, or trying to work out whether retinoids are right for you at all, a proper assessment is the place to start. I’m happy to talk you through which form of vitamin A your skin is genuinely ready for, and how to introduce it without the fight.

Book a skin consultation here