How Do Depilatory Creams Work?

Last Updated on August 29, 2026 by Giorgia Guazzarotti

Ever wondered how depilatory creams work?! I’m definitely a shaver, but I’ve dabbled in depilatory creams sometimes. As much as I love the ease and convenience of shaving, it’s a chore I have to do every day. Depilatory creams promise to keep my legs hair-free for 4 or 5 days, so, of course, I gave them a try.

Unfortunately, they never worked that well for me. I never seem to get a close shave with them, and, maybe because of that, my hair start growing back the next day. Plus, depilatory creams are more time-consuming – you have to apply them, wait for them to do their thing, and take them off.

So, I went back to using a razor. But, I remained curious about them. What is it about them that makes hair fall off? How do depilatory creams work, basically? Let’s investigate:

What Are Depilatory Creams?

Depilatory creams can come in liquid or cream form. Their job is to remove unwanted hair from the body. But, they can only remove hair from the surface of the skin, or just very little below it – not from the hair follicle. That’s why the results last 4 or 5 days at most. So, if you’re hoping for hair-free legs for weeks, this probably isn’t your best option. That said, they’re a quick fix when you need a smooth surface in a pinch (hello, last-minute plans!).

But what makes them different from other hair removal methods like waxing or epilating? Waxing rips the hair out from the root (ouch), while epilators pluck the hair out strand by strand (double ouch). Depilatory creams? Pain-free hair removal. They dissolve the hair instead: no pulling, no ripping. A much less painful, though short-lived, experience.

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How Do Depilatory Creams Work?

Depilatory creams are made up of three main groups of ingredients:

THE KEY INGREDIENTS

Depilatory creams contain either calcium or potassium thioglycolate or thioglycolic acid, chemicals that dissolve the bonds of keratin, the protein hair is made of, the protein hair is made of (of course, keratin can be found even in the skin and nails). When these bonds become loose, hair becomes so soft, it breaks off when you remove the cream from your skin.

But why do these specific chemicals work? Keratin is a tough protein that gives hair its structure, and breaking it down is no small feat. Thioglycolates act as reducing agents, essentially disrupting the keratin structure at a molecular level. Think of it like dismantling a LEGO tower one brick at a time until the structure collapses.

THE HELPER

These creams usually also contain the active ingredient calcium hydroxide, which increases the pH of the formula and helps thioglycolate better penetrate the hair, so the cream can do its job more easily. Sodium hydroxide does the same thing, but it’s used less often because because it’s harsher than calcium hydroxide.

This pH boost is crucial because our skin naturally has a lower pH level (around 4.5–5.5), while hair removal creams often have a much higher pH. The increased alkalinity weakens the hair’s natural defenses, making it easier for the thioglycolates to break through.

THE MOISTURISER

Some of these creams also contain moisturizing ingredients that keep skin stay soft and smooth while the hair is being removed. Even so, any form of hair removal can irritate skin (especially sensitive skin), so it’s always best to apply a moisturizer afterwards.

Ingredients like aloe vera, glycerin, or vitamin E are commonly added to counteract the potential drying effects of the harsher chemicals. These moisturizers don’t just hydrate; they also form a protective barrier, soothing the skin during and after the process.

Are Depilatory Creams Safe for Everyone?

While depilatory creams are widely available and easy to use, they aren’t a one-size-fits-all solution. Here are a few key points to consider:

• Skin Sensitivity: If your skin is prone to irritation or redness, you may want to proceed with caution.
• Type Of Hair: Thick, coarse hair may require stronger formulations, which could increase the risk of irritation.
• Body Area: The skin on your face is far more delicate than the skin on your legs, so always check whether the product is suitable for the area you’re targeting.

And then there’s the question of how frequently you can use these creams. Overuse can lead to skin sensitivity, so it’s generally recommended to wait a longer period, like 72 hours, between applications.

Do Depilatory Creams Have Any Side Effects?

I’m afraid so. Depilatory creams can cause:

• Allergic reactions
• Chemical burns
• Discolourations
• Irritations

Some of the ingredients in the them can be pretty harsh (I mean, they have to dissolve keratin bonds, so they can’t be too gentle), so they can cause problems, especially if your skin is sensitive.

How to Minimize the Risks

That’s why I recommend you do a patch test first. Try a small amount of the cream on a tiny area, like your wrist. If something nasty happens, and you experience a negative reaction, wash the cream off your skin IMMEDIATELY.

Also, avoid applying the cream on broken, sunburned, or otherwise compromised skin. It’s a recipe for disaster. And don’t leave the cream on longer than the instructions recommend; trust me, it won’t make your hair come off any better, but it might leave your skin red and angry.

Can you use depilatory cream if you have eczema?

You can use depilatory cream if you have eczema, but I wouldn’t put it anywhere near an active flare.  If your eczema is calm, patch test the cream on a small area first and see what happens. If you’re currently flaring, I’d stick to careful trimming instead. You’re shortening the hair without adding irritating chemicals or repeatedly dragging a razor over already-angry skin.

Can you use depilatory cream if you have psoriasis?

I’d skip depilatory cream anywhere you currently have psoriasis plaques. Psoriasis-prone skin can react to irritation and injury, and depilatory cream isn’t exactly known for being the gentlest thing you can put on your body. If your psoriasis is completely clear in the area, you could patch test first. During a flare, trimming is the option I’d choose because you’re not pulling hairs out, scraping the skin or covering it in hair-dissolving chemicals.

Can you use depilatory cream if you have rosacea?

Technically you can, but I wouldn’t make depilatory cream my first choice for a rosacea-prone face. These creams can cause redness, burning and irritation, which is basically the exact list of things you’re already trying not to trigger when you have rosacea.

If you’re determined to try one, don’t use it during a flare and patch test first. Personally, I’d go with a small facial trimmer instead. It’s not going to give you the same completely bare finish, but I’d take a tiny bit of peach fuzz over spending the evening wondering why my face suddenly feels like it’s on fire.

Can you use depilatory cream if you get ingrown hairs?

Yes – and if shaving constantly leaves you covered in ingrowns, depilatory cream might actually be worth trying. Unlike a razor, depilatory cream isn’t cutting the hair with a blade right against your skin. But don’t expect it to magically eliminate ingrowns either. They can still happen, particularly if you have coarse or curly hair.

FAQs About Depilatory Creams

1. Can depilatory creams cause permanent hair removal?

Nope! Since these creams only remove hair on the skin’s surface, your hair will grow back just as it was before. For permanent solutions, you’d need to look into options like laser hair removal or electrolysis.

2. Are depilatory creams safe for sensitive areas and pubic hair?

Some are specifically formulated for sensitive areas like the bikini line or face. However, even these gentler formulas can irritate, so proceed with caution. Always check the label for any irritants and do a patch test first.

3. How long do the results really last?

Usually about 3–5 days, depending on your hair’s growth rate. It’s not as long-lasting as waxing, but it’s quicker and less painful, and there’s a lot less discomfort.

4. Why do depilatory creams smell so bad?

It’s the thioglycolates again! Breaking down keratin produces sulfur-containing compounds, which are notorious for their less-than-pleasant odor. So if you’re smelling rotten eggs, you now know why.

5. Is depilatory better than shaving?

Not really. It’s just different. Shaving cuts the hair off at skin level. Depilatory cream basically ignite a chemical reaction that breaks the hair down so you can wipe it away. That can leave your skin feeling a little smoother than shaving with a blade, but it also comes with a bigger chance of irritation if your skin doesn’t like the formula. Neither method changes how fast your hair grows back, and neither makes it grow back thicker. That old myth can die now, please.

6. Is it better to wax or epilate?

They’re more similar than people realise. Both remove hair from the root. Wax does it by ripping off a whole strip of hairs at once. An epilator does it one tiny mechanical tweezer attack at a time. Waxing is faster over large areas. Epilating is cheaper long term because you buy the device once and keep using it. Neither is permanent, and neither is automatically “better.” I’d pick based on how much pain, mess and faffing around you’re willing to tolerate.

7. Are hair removal creams unhealthy?

No. Let’s not demonise perfectly legal products just because their names sound scary. Hair-removal creams contain chemicals capable of breaking down hair. That’s literally why they work. The problem comes when your skin doesn’t tolerate the formula, you use a body cream somewhere it has absolutely no business going, or you think, “I’ll leave it another ten minutes so it gets really smooth.” Please don’t. Depilatories can cause irritation and, when badly misused, chemical burns. That doesn’t make them inherently unhealthy. It means you need to follow the instructions properly.

8. What do dermatologists recommend for hair removal?

Honestly, there isn’t one hair-removal method that dermatologists have collectively crowned The Best. If shaving works without turning your legs into an itchy mess, shave. If you want longer between hair-removal sessions, waxing or epilating makes more sense. If you want to actually reduce how much hair grows back, that’s when laser becomes worth looking at. The Endocrine Society recommends laser/photoepilation for most women with unwanted dark hair who want direct hair removal, while electrolysis is suggested for white or blonde hair.

9. What is the best way to remove facial hair on an older woman?

Please don’t be scared of shaving because someone told you your chin hairs will come back looking like your husband’s beard. They won’t. Shaving doesn’t change the follicle, hair-growth rate or actual thickness of the hair. The blunt cut end can simply feel coarser when it grows back. For a handful of hairs, I’d tweeze. For lots of hair, shaving is easy. If you want longer-term reduction, laser works best on pigmented hair, while electrolysis is an option for white or blonde hairs.

10. Which hair removal cream is safest?

There’s no scientifically proven Safest Hair Removal Cream In The World. And I wouldn’t trust manufacturers telling me otherwise without comparative studies. Use something made for the area you’re treating, follow the timing instructions and stop using it if your skin repeatedly reacts. Boring advice. Much more useful than pretending one tube has magical safety powers.

The Bottom Line

Depilatory creams might not be everyone’s cup of tea, but they’re a handy, pain-free option when you’re short on time and need a smooth finish. Just remember to patch-test, follow the instructions, and moisturize like your life depends on it. Happy hair removing!

The Bottom Line

Depilatory creams might not be everyone’s cup of tea, but they’re a handy, pain-free option when you’re short on time and need a smooth finish. Just remember to patch-test, follow the instructions, and moisturize like your life depends on it. Happy hair removing!