The question we get most about Lips, before and after people buy it, is whether it will suit skin that reacts to almost everything. It's a fair worry. Vulvar skin lets more through than the skin on your arm, so a product that's fine elsewhere can sting here, and the reasons are well documented.
Nobody can promise a product will suit every person. What you can do is test a balm the way dermatologists suggest, and read the label for the few things that matter most on reactive skin. This article covers both, and it also says when a balm is the wrong place to start.
In this article
- Why sensitive skin needs a slower start
- How to patch test a vulva balm
- What a reaction looks like, and when it shows up
- The label: what to check on reactive skin
- What is in Lips, and what is not
- Who should skip a balm for now
- If it doesn't suit you
- Frequently asked questions
Why sensitive skin needs a slower start
The skin of the vulva works differently from most of your body. Researchers who study how products affect this area report that vulvar tissue is more permeable than exposed skin, and standard skin tests don't fully copy what happens there. It spends most of the day warm and covered, rubbing against fabric whenever you move.
That means two things for anyone with reactive skin. Whatever you put on it reaches deeper, and it stays in contact longer, because nothing evaporates under underwear the way it does on an open forearm.
It also means a slower start makes sense even with a gentle product. Most reactions to a cosmetic are mild and stop when you stop using it, but they're easier to read on a small patch of arm than on skin you can't easily see.
How to patch test a vulva balm
The method dermatologists suggest for a cosmetic you want to try at home is called a repeat open application test. DermNet, the dermatology reference run by dermatologists in New Zealand, describes it as applying the product twice a day to a small area of forearm skin for 5 to 10 days. If there's no redness or swelling at the end, an allergy to that product is unlikely.
Here is how that looks with a balm.
- Pick a spot that stays covered. The inside of your forearm or the crease of your elbow works well. A covered spot gets some of the warmth and rubbing the vulva does.
- Use a pea-sized amount, the same amount you'd use later. Rub it in until it melts.
- Do it twice a day, morning and evening, on the same spot.
- Keep going for at least five days, ideally seven to ten. One evening isn't a test, because allergic reactions are slow (more on that below).
- Look at the spot every day in good light. You're watching for redness, small bumps, swelling or itch that wasn't there before.
- If the arm stays calm, start on the vulva with less than you think you need, once a day for the first few days, then build up.
We know a week of rubbing balm on your arm feels slow when the reason you bought it is discomfort somewhere else. It's still the most reliable thing you can do at home, and it costs nothing but a few days.
A shortcut that doesn't work
Dabbing a product on once and checking an hour later only tells you about irritation that shows up fast. It says almost nothing about an allergy, which builds over days. If your skin has reacted to products before, skip the shortcut.
What a reaction looks like, and when it shows up
There are two kinds of skin reaction to a product, and they show up on very different timelines.
Irritation happens when an ingredient roughs up the outer layer of the skin. It's the more common of the two, and the NHS describes it as a reaction that usually occurs within a few hours or days of exposure. It tends to feel like stinging or burning more than itch.
An allergy is your immune system responding to one specific ingredient. It's slower. DermNet's page on reactions to essential oils says this kind of reaction generally occurs 24 to 72 hours after exposure, and Cleveland Clinic notes that reactions can follow a single exposure or repeated exposures over time. That last point is why a test that lasts a week catches more than a test that lasts an hour.
| What you notice | When it usually shows up | What it may mean | What to do |
|---|---|---|---|
| A brief cool or tingly feeling that fades in minutes | Right away | Often the feel of an ingredient such as peppermint, not a reaction | Nothing, if it fades and the skin looks normal |
| Stinging or burning that lasts | Within minutes to hours | Irritation | Wash it off with plain water, stop using it |
| Redness, small bumps, itch on the test spot | After one to three days, sometimes later | Possible allergy | Stop, and don't move on to the vulva |
| Swelling, blisters, a rash that spreads | Any time | A stronger reaction | Stop, and see a doctor or pharmacist |
| No change after 7 to 10 days | An allergy to the product is unlikely | Start slowly on the vulva |
One more thing from our own buyers. One buyer told us her skin reacted after about a week of using Lips every night. That's exactly the timeline a slow allergy follows, and it's why we'd rather you test for a week than for an evening.
The label: what to check on reactive skin
You don't need to know chemistry to read a balm label. On reactive skin, a few questions do most of the work. Our longer guide to vulva balm ingredients goes through them one by one; here is the short version.
Fragrance. Fragrance is a common reason intimate skin reacts. Look for "fragrance-free" or "no fragrance". "Unscented" can mean a masking scent was added to cover the smell of the base.
Essential oils, and how much. Essential oils are plant extracts, and some people react to them. DermNet lists the ones that most often cause allergic reactions, including tea tree, ylang-ylang, lemongrass, sandalwood and clove, and it warns against putting undiluted oils on skin. Concentration matters. A formula that names its oils and tells you roughly how much of the formula they make up is easier to judge than one that hides them under "botanical blend".
The length of the list. More ingredients means more chances that one of them is the one your skin dislikes. Short lists are easier to test and easier to rule out.
Strong warming or cooling ingredients. Menthol, camphor and high levels of mint can feel strong on this skin.
Everything else you use. A balm often gets blamed for a reaction that comes from soap, wipes or laundry detergent. If you're still washing the area with ordinary soap, that's worth changing first, because it strips the skin before the balm ever touches it.
What is in Lips, and what is not
Since this is our product page's most-asked question, here is the whole list, so you can check it against anything you already know your skin dislikes.
The base: sweet almond oil, jojoba oil, candelilla wax (a plant wax), cocoa butter, calendula macerate (calendula flowers soaked in oil), castor oil and vitamin E. Candelilla wax forms a light layer that holds moisture in without feeling heavy.
The essential oils: ho wood, geranium bourbon, peppermint, palmarosa and blue tansy. Together they make up about 1% of the formula. The peppermint is why some people feel a brief cool sensation when they first put it on.
What's left out: no fragrance, no hormones and no petroleum.
It's made in Montréal, formulated by women, and it comes in a 1 oz amber glass jar. The page asks you to patch test before full use and to stop if irritation appears, which is the same advice this article gives.
Two honest notes for reactive skin. Sweet almond oil comes from a nut, so if you have a nut allergy, ask your doctor before trying it. And none of the five essential oils is on DermNet's list of the most frequent culprits, but that doesn't mean nobody reacts to them. Any plant oil can bother someone, which is the reason for the week-long test.
Buyers with reactive skin have told us what they were afraid of before ordering. One wrote: "When I bought the product, I was not sure it could really be for me since I have a very sentisive (and reactive!) vulva area. The fact that it was all natural ingredients reassured me" (M.N., verified buyer, January 2025). Another titled her review "Finally something gentle" (D., verified buyer, August 2026).
Natural ingredients can still bother some people, and we'd never tell you otherwise. What a short, named list gives you is the chance to check every ingredient and test the jar on your own skin before you rely on it.
Who should skip a balm for now
A balm is a moisturizer. It can help skin feel comfortable when it's dry or rubbed by clothing, and that's the job it's made for. It's the wrong first step in a few situations.
If the skin is broken, raw or cracked. The Lips page says to avoid broken skin. Let it settle, and if it doesn't, have it looked at.
If you have intense itch, itch that wakes you at night, or skin that's turning white, thin or shiny. Those are signs to see a doctor, because some skin conditions start that way and need a diagnosis. A balm can sit alongside treatment later, never in place of it. Our article on lichen sclerosus explains why this matters.
If there's new discharge, a strong change in smell, or pain when you pee. Those are reasons to see a doctor, and a balm isn't made for them.
If you've reacted to almond, calendula or any of the essential oils above. Choose a product without them, or test very carefully with your doctor's advice.
If you're still using the products that might be causing it. Soap, scented wipes, panty liners and fabric softener cause a lot of the irritation people try to fix with a cream. Taking them away costs nothing and sometimes solves it.
If it doesn't suit you
Even with a careful test, a product won't suit everyone. A few buyers have told us Lips didn't ease what they were dealing with, and that's useful to know before you order.
That's what the guarantee is for. The page says it in these words: "30-day satisfaction guarantee. if lips doesn't work for you, reach out within 30 days of your first order and we'll make it right." Write to us and we'll answer within 24 to 48 hours to sort it out.
If it does suit you, start with a pea-sized amount and build from there. If you've been using one for a few weeks and you're not sure it's helping, this checklist walks through the usual reasons.
Lips is $36 CAD ($27 USD), it ships free on its own in Canada and the US, and the full ingredient list is on the product page.
Frequently asked questions
Is a vulva balm safe for sensitive skin?
It can be, but no product is safe for every person. Choose one without fragrance and with a short ingredient list, then test it on your inner forearm twice a day for five to ten days. If the spot stays calm, an allergy is unlikely, and you can start slowly on the vulva.
How do I patch test a balm before using it on my vulva?
Use the repeat open application method dermatologists suggest. Rub a pea-sized amount on the same spot of your inner forearm or elbow crease twice a day for five to ten days. Check the spot daily for redness, bumps, swelling or new itch. No change at the end means an allergy is unlikely.
Why does my skin react to a product days after I started using it?
Because allergic reactions are slow. Your immune system needs time to respond to a specific ingredient, and DermNet notes these reactions generally appear 24 to 72 hours after contact, sometimes after repeated use. Irritation is faster and usually shows up within hours. A one-day test misses the slow kind.
Can essential oils in a vulva balm cause irritation?
They can, in some people. Essential oils are plant extracts, and a few are common causes of skin allergy, especially undiluted. What matters is which oils and how much. Lips lists its five essential oils on the page, and together they make up about 1% of the formula.
Does a cool or tingly feeling mean a reaction?
Not always. Peppermint and other mint ingredients can feel cool for a few minutes, and that's simply how the ingredient feels. If the feeling turns into stinging or burning that lasts, or the skin turns red, wash it off with plain water and stop using it.
What should I do if a balm irritates my skin?
Stop using it and rinse the area gently with plain water. Mild irritation usually settles within a few days once the product is gone. See a doctor or pharmacist if you notice swelling, blisters or a spreading rash, or if it hasn't settled after a few days.
Sources
- Vulvar skin is more permeable than exposed skin: Farage and Maibach, Contact Dermatitis, 2004, PubMed 15500670
- Repeat open application testing at home: DermNet, Patch tests
- Allergic reactions to essential oils, timing and common causes: DermNet, Allergic contact dermatitis to essential oils
- Irritant and allergic contact dermatitis: NHS, Contact dermatitis
- Reactions after single or repeated exposure: Cleveland Clinic, Contact dermatitis
About this article
Written by the Peach & Cream team, based in Montréal. Published October 15, 2026. Last updated October 15, 2026. Product facts come from the Lips product page and label; buyer words are quoted exactly from verified reviews on our store. This article is general information, not medical advice. Lips does not treat or prevent any condition.