Hyperpigmentation around the mouth
A dark ring or shadow around the mouth usually has a cause you can find: saliva or a product that irritates the skin, perioral dermatitis, melasma on the upper lip, or marks after waxing or breakouts. A 2022 review in Pigment International says these causes are seen more often in skin types IV and V. Remove the trigger first.
Published · Written by Kay Woodson · Results vary.
Why does the skin around my mouth get darker?
Few patches of skin get touched as often as the ring around your lips. Food, saliva, toothpaste, lip balm, lipstick and the backs of your hands all meet it many times a day. The 2022 review by Bhatt, Neema and Vasudevan notes that its position close to the mouth exposes it to a long list of possible allergens.
On melanin-rich skin, irritation tends to leave color behind. Contact dermatitis, a rash from something touching the skin, is one of the causes of post-inflammatory hyperpigmentation listed in a 2010 review on skin of color. So a mild reaction you barely noticed can still leave a shadow for months.
The same review authors add a caution worth repeating: very little research covers dark skin around the mouth, and the cause is often more than one thing at once.
What causes dark skin around the mouth?
| Possible cause | What tends to point to it | First move |
|---|---|---|
| Lip licking, saliva, food | Darker, dry or rough skin right along the edge of the lips | Break the habit; a dermatologist if the skin cracks or stays rough |
| Toothpaste, lip products, cosmetics | Started after a new product; itches or stings | Stop one suspect at a time and watch |
| Perioral dermatitis | Small bumps around the mouth, sometimes the nose or eyes. Skin-colored on skin of color, red on lighter skin | Stop corticosteroid creams, then a dermatologist if it stays |
| Melasma | Patches above the upper lip, often with matching patches on the cheeks or forehead | A dermatologist. See melasma |
| Marks after waxing, threading or breakouts | Spots sit exactly where hairs were removed or pimples healed | Gentler hair removal, sun protection, time |
| Acanthosis nigricans | Thicker, velvety dark skin; the AAD says it can, less often, reach the lips and mouth | A board-certified dermatologist |
| A medical cause | Darkening that spreads with no skin trigger, or spots on the lips or inside the mouth | A physician, without delay |
From Bhatt et al., Pigment International 2022, and AAD pages on perioral dermatitis and acanthosis nigricans, read October 29, 2026. Only a doctor can diagnose.
What does perioral dermatitis look like on darker skin?
Most photos show a red, acne-like rash. The AAD points out that on skin of color the bumps are often skin-colored instead. That makes it easy to miss, until the bumps settle and leave a dark ring behind.
The AAD says its cause is not fully clear. Skin care products, toothpaste and an allergy to something touching the skin may play a part, and long use of corticosteroid creams on the face is linked to it. To clear it, the AAD says all corticosteroids have to stop, including over-the-counter hydrocortisone, and warns that the rash may flare for a while after you stop. Check with the doctor who prescribed a cream before stopping it.
A calm reset for the skin around your mouth
- 1List everything that touches itToothpaste, mouthwash, lip balm, lipstick, cleanser, the cream you dab on the corners of your mouth. Write the list down. The answer is often on it.
- 2Remove suspects one at a timeChange one product, wait, and watch. Changing five at once tells you nothing about which one was the problem.
- 3Wash gentlyFor perioral dermatitis, the AAD suggests a mild, fragrance-free cleanser and gentle washing. That suits any irritated skin around the lips.
- 4Protect it from sunThe Skin of Color Society says sunlight can make post-inflammatory marks darker. Its sunscreen guide says to reapply every 2 hours outdoors.
- 5Only then, think about fadingOnce nothing is irritating the area, the fading ingredients the Skin of Color Society lists, such as azelaic acid or a retinoid, become an option. Around the lips, start slowly: this skin reacts fast.
Can waxing or shaving darken the upper lip and chin?
Waxing, plucking and shaving can all inflame hair follicles. The AAD lists all three as causes of folliculitis, the bumpy breakout that can follow hair removal, and suggests stopping for 30 days when it happens. On darker skin, each round of bumps is a chance for a new mark.
If you remove hair above the lip or on the chin, tell whoever does it that your skin marks easily. Before an exfoliating facial, mention any recent waxing too, since it changes what is safe that day. For bumps from shaving, the razor bumps guide covers technique.
Can a facial help?
A facial cannot fix a habit, an allergy or a medical cause, and Kay Woodson does not diagnose. What the $125 Signature Facial offers is 60 minutes with a consultation included: bring your list of products, so Kay sees everything that touches your skin each day.
Once the area is calm, the $225 Advanced Facial adds exfoliation and a superficial peel for flat marks. [TO CONFIRM: whether Kay treats the skin around the mouth with the peel or microdermabrasion in the Advanced Facial, or keeps it out, Kay]
Signs that need a physician, not a product
The 2022 review notes that dark skin around the mouth can, rarely, reflect a condition elsewhere in the body, such as Addison disease, a vitamin deficiency or a medicine. See a physician or a board-certified dermatologist if the darkening came on suddenly, keeps spreading, or has no clear trigger. The AAD also lists the mouth among places where skin cancer can appear in darker skin, so any new dark spot on the lips or inside the mouth needs an exam.
Questions about dark skin around the mouth
Why is the skin around my mouth darker than the rest of my face?
Often because it is irritated more than any other part of the face, by saliva, food and products. On darker skin, that irritation can leave post-inflammatory marks. Melasma, perioral dermatitis and hair removal are other common causes.
Can toothpaste cause dark spots around the mouth?
It can play a part. The AAD names toothpaste as a possible factor in perioral dermatitis, and the 2022 review lists allergic reactions to products that touch the mouth area among the causes of darkening there.
How long does it take to fade?
Once the trigger stops, marks can still take months or even years to fade completely, according to the Skin of Color Society. Sun protection keeps them from darkening further.
Is it melasma?
It may be if the patch sits above the upper lip and you have matching patches on the cheeks or forehead. A dermatologist can confirm. Melasma needs its own plan: see the melasma page.
- Bhatt S, Neema S, Vasudevan B. Perioral pigmentation. Pigment International. 2022;9(3):151-165 (abstract), 2022, abstract read October 29, 2026
- Red rash around your mouth could be perioral dermatitis, American Academy of Dermatology, no date shown, read October 29, 2026
- Acanthosis nigricans: Signs and symptoms, American Academy of Dermatology, no date shown, read October 29, 2026
- Finding skin cancer in darker skin tones, American Academy of Dermatology, last updated June 3, 2025, read October 29, 2026
- Folliculitis, American Academy of Dermatology, no date shown, read October 29, 2026
- Post-Inflammatory Hyperpigmentation (PIH), Skin of Color Society, Chere Lucas, MD, no date shown, read October 29, 2026
- A guide to sunscreen selection, Skin of Color Society, no date shown, read October 29, 2026
- Davis EC, Callender VD. Postinflammatory hyperpigmentation in skin of color. J Clin Aesthet Dermatol. 2010;3(7):20-31, July 2010, read October 29, 2026
- Karisma Esthetics booking page and prices, GlossGenius, checked October 29, 2026