Exfoliation is the process of removing dead skin cells from the surface of your skin. Done properly, it unclogs pores, brightens a flat complexion, and gives your serums and moisturizers a real chance of actually absorbing and working (instead of sitting on top of build-up doing very little).
That said, less (lower concentration and / or lesser frequency) is often more, as over-exfoliating strips the moisture barrier your skin works hard to maintain, and a compromised barrier creates more problems than whatever dullness you were trying to fix.
If you're new to building a beginner exfoliating skincare routine, this is your guide.
What is exfoliation?
Your skin sheds dead cells on its own. It's doing it right now, through a process called desquamation, where surface cells loosen and fall away so fresher ones can come through.
When you're younger, that cycle runs roughly every 28 days and moves pretty efficiently. Then it slows. Age, stress, hormonal changes, conditions like eczema… all of it can disrupt the process and leave dead cells sitting on the surface longer than they should.
The result? Skin that looks kind of flat. Not dry exactly, but not quite alive. Pores appear larger because they're under a layer of build-up. Your serum goes on and does, well, not much, because it can't get through.
That's what skin exfoliation addresses. Whether physical or chemical, it helps clear that build-up so fresher skin can show up. It can improve your skin’s tone, texture, and how effectively your other products absorb. Because, truly, a moisturizer on freshly exfoliated skin does more than the same product applied over dead cell accumulation.
The rest of your routine just works harder when there's a clear path in. And who doesn’t want that?
Types of exfoliation explained
Physical exfoliants
Face scrubs, cleansing brushes, muslin cloths… Physical exfoliants work mechanically, ie. they manually buff away dead cells through friction. The appeal makes sense: it's tactile, you can feel something happening, and it's immediate.
The problem, for reactive or sensitive skin, is the friction. Harsh grainy scrubs (especially ones with irregular or jagged particles) can cause small tears in the skin surface and kick off inflammation. The AAD specifically flags harsh scrubs as a risk for sensitive skin. That doesn't mean physical exfoliants are completely off the table — you just need to pick the right formula. One made with small, gentle particles for sensitive skin is ok. A scrub with large, gritty compounds, not so much.
Chemical exfoliants
Chemical exfoliants use acids or enzymes to dissolve the bonds between dead skin cells rather than scrubbing them away. It sounds more aggressive than it is (especially when the word “acid” is in the mix). But in practice, the chemistry works across the whole surface gently and evenly, and it’s a great option for more sensitive skin types.
Two families to know. AHAs (alpha hydroxy acids) are water-soluble and work at the skin's surface. Glycolic acid and lactic acid are the most common. They suit dry, dull, or uneven skin particularly well. BHAs (beta hydroxy acids, most commonly salicylic acid) are oil-soluble, meaning they can get inside the pore. Better for oily or blemish-prone skin, especially if congestion is the main issue.
Where does exfoliation sit in your skincare routine?
Cleanse first. Then exfoliate (on exfoliation days). Then serum. Then moisturizer. Then SPF in the morning.
Let’s get into a bit more detail.
Cleansing removes the surface layer of oil, make-up, and buildup so the exfoliant can actually reach your skin. Chemical exfoliants are usually applied after cleansing to dry skin, and physical exfoliants typically happen during the cleanse itself (as a second step that you rinse off) while your skin is still wet. Make sure you follow your specific product’s instructions.
The reason exfoliation comes before serums and moisturizers is because those products need a clear path in. Applying a hydrating serum over dead cell build-up isn’t going to do much. The exfoliation step is what makes the rest of the routine worth doing. Exfoliating after your other steps just removes everything, so avoid.
What to do after exfoliating
Freshly exfoliated skin is more receptive. It's also more exposed.
Apply a moisturizer straight after, ideally something formulated with barrier-supporting ingredients like ceramides, colloidal oatmeal, and / or hyaluronic acid. That’s really the step that makes exfoliation sustainable.
In the morning, SPF, especially since AHAs and BHAs increase the skin's sensitivity to UV exposure. The AAD is clear on this: skipping sun protection after using an acid exfoliant isn't a minor oversight. SPF 30 minimum, every single morning.
One more thing: don't use retinol or other strong actives on the same day as exfoliating (and definitely not in the same session), at least not when starting out. One thing at a time. Your skin will tell you when it's ready for more.
Signs you are over-exfoliating
This is a very common mistake, and it makes sense, because the early results feel encouraging, and it's tempting to push.
But over-exfoliating strips your skin's moisture barrier. Once that's gone, everything becomes harder. And barrier disruption leaves your skin more vulnerable to irritants and more prone to water loss, which really isn’t the goal.
Here's what it looks like when your skin is sending you an SOS:
- Redness that stays: a little pink right after exfoliating is fine; redness that hangs around for hours isn't.
- Tightness and stinging: when something completely gentle (like a hydrating serum or a plain moisturizer) suddenly stings or pulls, that's your barrier telling you it's compromised.
- Increased dryness or flaking: this might sound counter-intuitive, but over-exfoliating often causes the dryness it was supposed to fix, as a stripped barrier can't hold moisture in properly.
- Breakouts getting worse: again, this sounds like the opposite of what you’re trying to do, but barrier disruption can trigger excess oil production in response.
If any of this sounds familiar: stop, and focus on gentle cleansing only, and spend some time on barrier repair. Ultra Repair Cream is formulated with colloidal oatmeal, ceramides, and shea butter, so it’s exactly what your skin needs right this moment. It calms without asking anything from skin that's already irritated.
Reintroduce exfoliation more slowly once things have settled.
First Aid Beauty exfoliants for beginners
Here are our top 3 if you’re just starting one. Pick one (in line with your goals and skin type), and stick with it:
- Brighten + Glow Facial Radiance Pads with Glycolic + Lactic Acids is the one most beginners reach for, and for good reason. It’s designed to be gentle enough for daily use on sensitive skin. The pad format means no measuring, no waiting. Swipe and done.
- Brighten + Glow Exfoliating Gel Cleanser with AHA and Jojoba Pearls is a great pick if you want to build exfoliation into your cleansing routine. Formulated with lactic acid (an AHA), niacinamide, and rounded jojoba pearls, it gently cleanses and exfoliates to reveal smoother, softer, brighter-looking skin without stripping it.
- Acne Clearing Pads with 2% Salicylic Acid are what we’d reach for to tackle acne and breakouts. They’re formulated to treat and help prevent breakouts without stripping skin dry, and tested to be gentle enough for sensitive skin, so they’re perfectly fine to use even if you’re just starting out.
Frequently Asked Questions
What does it mean to exfoliate?
Exfoliating means removing dead skin cells from the surface of your skin. Your skin does this naturally, but the process slows over time, meaning dead cells end up sitting on the surface longer than they should. Exfoliation, whether through a physical scrub or a chemical exfoliant, clears that build-up to reveal that newer, fresher, smoother skin underneath.
Is it OK for beginners to use chemical exfoliants?
Yes, and for a lot of skin types, they're actually the best starting point. Chemical exfoliants dissolve the bonds between dead cells without friction, which makes them generally gentler and more consistent in coverage.
Should I exfoliate in the morning or at night?
Either works, though plenty of people prefer the evening, as there's no immediate sun exposure to worry about. That said, if you exfoliate in the morning, SPF is essential, as AHAs and BHAs make your skin meaningfully more sensitive to UV. Follow the product instructions for timing, and pay attention to what your skin says back.
What should I apply after exfoliating?
Moisturizer, straight away. Freshly exfoliated skin is more receptive but also less defended. A barrier-supporting moisturizer keeps hydration in and the surface protected. In the morning, SPF goes on after that.
Can I exfoliate if I have sensitive skin?
Yes, but the type and frequency matter more. For sensitive skin, gentle chemical exfoliants and low concentrations tend to be the perfect starting point. If your skin is in an active flare right now, wait until your skin gives you the “okay” to go ahead.