Actor Sydney Sweeney said in 10th grade she read toothpaste would make acne disappear and put toothpaste all over her face. The experiment backfired into severe rashes and irritable, cystic-acne-prone combination skin, the kind of reaction dermatologists tie to toothpaste ingredients that irritate rather than treat pimples.
A spot treatment is a product dabbed on a single pimple to shrink it fast. As Vogue reported in its Beauty Secrets video, Sweeney tried toothpaste for that job and ended up missing school because of her skin watch the Vogue Beauty Secrets short. The Zoe Report recounts how the rash left her with reactive combination skin read Sweeney's skin-care interview.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- What Sweeney tried in 10th grade
- Why toothpaste irritates acne-prone skin
- How barrier damage fuels more breakouts
- What dermatologists recommend instead
- When to skip home hacks and get care
What Sweeney tried in 10th grade
Sweeney was dealing with typical teen breakouts when she found the toothpaste tip. She spread a full layer across her face instead of dabbing one spot. The result was not clearer skin but widespread irritation.
She later described severe rashes and skin that stayed sensitive and prone to deep, painful cystic acne. That reactive pattern made combination skin harder to manage. It also kept her from wanting to go to school.
Why toothpaste irritates acne-prone skin
Toothpaste is made for teeth, not skin. The American Academy of Dermatology notes it contains hydrogen peroxide, baking soda, alcohol and menthol that can clog pores and irritate skin read dermatologists' warning on GoodRx.
Board-certified dermatologists warn the mix causes over-drying, burning, redness, peeling and dark marks. The pimple often ends up redder and more irritated than at the start. Fragrance and foaming agents add more risk for sensitive areas around the mouth and cheeks.
How barrier damage fuels more breakouts
Healthy skin relies on a barrier that holds in moisture and keeps out irritants. Dermatologists explain toothpaste strips that barrier, as Dr. Mona Gohara told Cosmopolitan Philippines see Dr.
Gohara's explanation. The skin then pumps out extra oil to compensate. That excess oil clogs pores and triggers more breakouts, blackheads and oily shine. A skin expert also warns the hack can cause perioral dermatitis, with redness, small bumps, itching or burning, especially in teens and acne-prone users trying home fixes.
What dermatologists recommend instead
The American Academy of Dermatology's 2024 acne guidelines strongly recommend benzoyl peroxide to reduce acne bacteria and topical retinoids including adapalene and tretinoin to clear pores. For a new pimple, readers can take a narrower approach:.
- Leave toothpaste, alcohol and menthol products off breakouts.
- Use only a dermatologist-approved spot treatment as directed.
- Stop any product that burns, peels or spreads redness.
- Keep the rest of the routine gentle to protect the barrier.
When to skip home hacks and get care
Sweeney's rash story is a personal anecdote, not a clinical trial. It shows what can go wrong, not what will happen to every person.
Individual skin type, toothpaste formula and contact time all change the outcome. Test only dermatologist-approved spot treatments. Seek care promptly for severe, painful, spreading or scarring acne rather than layering on another home hack.