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Research

5 / 1000+ results

research A clinical evaluation of a permanent hair dye designed to reduce allergic contact dermatitis and hair damage

9 citations , July 2022 in “Journal of Cosmetic Dermatology”

In this study, an ammonia-free and PPD-free permanent hair dye was tested on 50 ethnically diverse females, showing no cases of contact dermatitis and significant improvements in hair shine, color, moisturization, porosity, and combability after two dyeing sessions.

research Alopecia areata after severe allergic contact dermatitis to a permanent hair dye

August 2022 in “Contact dermatitis”

This case report describes a 24-year-old male who developed alopecia areata following an allergic reaction to a permanent hair dye, possibly linked to previous sensitization from a henna tattoo.

research Patch tests with commercial hair dye products in patients with allergic contact dermatitis to para-phenylenediamine

6 citations , January 2016 in “Indian Journal of Dermatology Venereology and Leprology”

This study found that the majority of "hypoallergenic" hair dyes still triggered allergic reactions in patients sensitive to para-phenylenediamine.

research Black hair dye dermatitis: Still a major skin problem and commonly mimicking chronic actinic dermatitis

July 2026 in “Our Dermatology Online”

This study observed a significant rise and fall in black hair dye dermatitis cases over six years, primarily affecting middle-aged men, with most cases presenting as chronic pigmented lichenoid photodermatitis.

research Hydrogen peroxide and monoethanolamine are the key causative ingredients for hair dye-induced dermatitis and hair loss

34 citations , January 2012 in “Journal of Dermatological Science”

In this mouse study, researchers found that hydrogen peroxide and monoethanolamine in hair dyes may be key contributors to dermatitis and hair loss due to oxidative stress.

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Community Join

5 / 403 results

community How come some guys are half bald yet their hair is so healthy?

in Finasteride/Dutasteride 62 upvotes 1 year ago

A 22-year-old male experiencing diffuse thinning and frizzy hair has been using finasteride for nine months and is seeking advice on improving hair quality. Suggestions include using conditioners, biotin, rosemary oil, and addressing scalp conditions like seborrheic dermatitis or psoriasis, while finasteride may help reverse miniaturization and improve hair health.

community Hair loss is holding me back from enjoying life and I'm wasting away my youth

279 upvotes 5 months ago

A 31-year-old man feels depressed due to hair loss, using topical finasteride and previously tried minoxidil. Others suggest treatments like finasteride, minoxidil, hair transplants, or embracing baldness, highlighting the importance of mental health and self-acceptance.

community My finasteride progress in a 6 month

1282 upvotes 8 months ago

Successful hair regrowth after six months using finasteride and topical minoxidil, with minimal side effects like anxiety. Finasteride was the main treatment, and minoxidil supported regrowth.

community 5 years apart on 1.25mg finasteride and 5mg oral minoxidil daily

3325 upvotes 11 months ago

Significant hair improvement was achieved using 1.25mg finasteride and 5mg oral minoxidil daily, with no side effects. The user increased the minoxidil dosage to 7.5mg after noticing minor thinning and plans to continue the routine.

community 22 | ~34 Months Finasteride Update

820 upvotes 2 years ago

A user shared their 34-month update on using finasteride for hair loss, noting they maintained regrowth even after stopping minoxidil a year ago. Other users shared similar experiences and expressed admiration for the results.

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Clinics

6 / 13 results

All 13 clinic results →

Learn

4 / 801 results

learn Fluocinolone

What type of hair loss is Fluocinolone recommended for, and how does it help inflamed scalps? Fluocinolone is a prescription topical corticosteroid used for inflammatory scalp conditions such as seborrheic dermatitis, scalp psoriasis and scarring alopecias. It calms inflammation rather than growing hair, it is not a treatment for pattern hair loss, and its labelling warns against prolonged use.

learn Hydrocortisone

When should hydrocortisone be used for hair loss — is it only for irritated scalps or also alopecia areata? Hydrocortisone is a low-potency topical steroid whose labelled use is calming scalp irritation such as dermatitis; for alopecia areata no verified human trial supports it on its own, and dermatologists generally use stronger prescription corticosteroids instead.
Is hydrocortisone effective for stopping inflammation that blocks hair growth? Sources describe hydrocortisone as a short-course treatment for scalp inflammation such as seborrhoeic dermatitis or eczema, and no verified trial tests it as a hair-regrowth treatment; the corticosteroids used for alopecia areata are the potent prescription ones, and prolonged use of any topical steroid on the scalp risks skin thinning.

learn Azelaic Acid

azelaic acid: Does it work for all types of hair loss or just DHT? One small randomised trial (26 women) found 5% azelaic acid comparable to 2% minoxidil for female pattern hair loss, and the anti-DHT rationale rests on laboratory work; for alopecia areata, telogen effluvium and seborrhoeic dermatitis there is no trial evidence for azelaic acid at all.

learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

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Experts

2 / 17 results