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Glossary Patch Testing

diagnostic method to identify skin allergies to specific substances

Patch testing is a diagnostic procedure used to identify substances that cause allergic contact dermatitis. Small amounts of potential allergens are applied to patches, which are then placed on the skin, usually on the back, for 48 hours. The skin is examined for reactions at 48 hours and again at 72-96 hours to determine if an allergy is present.

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Research

5 / 1000+ results

research Patch testing with hair cosmetic series in Europe: a critical review and recommendation

47 citations , June 2015 in “Contact Dermatitis”

This review discusses the need for an updated 'European hair cosmetic series' to include common contact allergens and remove outdated substances based on current evidence and regulations, but it reports no new results.

research Patch testing and contact allergen avoidance in patients with lichen planopilaris and/or frontal fibrosing alopecia: A cohort study

35 citations , January 2020 in “Journal of the American Academy of Dermatology”

Avoiding certain allergens in personal care products may improve symptoms for some patients with lichen planopilaris or frontal fibrosing alopecia.

research Photopatch and patch testing in 63 patients with frontal fibrosing alopecia: a case series

24 citations , July 2018 in “British Journal of Dermatology”

Contact allergies might contribute to frontal fibrosing alopecia.

research Common Allergens Identified Based on Patch Test Results in Patients with Suspected Contact Dermatitis of the Scalp

16 citations , December 2016 in “Skin appendage disorders”

This study analyzed patch test results to identify allergens causing scalp contact dermatitis, finding nickel, cobalt, and balsam of Peru among the most common in the patient population.

research Patch Testing in Allergic Contact Dermatitis from Minoxidil

11 citations , July 2010 in “Dermatitis”

This review discusses the side effects associated with topical minoxidil in treating androgenetic alopecia, noting propylene glycol as a common allergen and suggests alternatives for affected patients but reports no new clinical results.

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Community Join

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community Natural sweetener Stevia found to turbocharge male pattern baldness treatment: Mice given Stevia patch had 18 times better absorption of minoxidil and hair coverage of 67.5% in bald areas after just 35 days.

1741 upvotes 8 months ago

Stevia microneedles increased minoxidil absorption and hair growth in mice. The conversation humorously questions the applicability of these results to humans.

community PP405 (JXL069) Is Confirmed: Here’s Everything I’ve Learned After a Year of Testing

80 upvotes 1 month ago

JXL069, also known as PP405, did not lead to hair regrowth after a year of testing. The lack of results may be due to formulation issues, leading to a final attempt with an improved vehicle.

community Getting PP405. Now…. or as soon as possible

147 upvotes 1 year ago

People are discussing obtaining and testing PP405 for hair loss treatment, with concerns about its purity and effectiveness. Some are considering delaying hair transplants, while others suggest using existing treatments like finasteride and minoxidil.

community Has anyone ordered JXL-069 (grey market PP405)?

53 upvotes 1 year ago

People are discussing JXL-069 (PP405) for hair loss, with some experimenting with a 0.05% topical gel. Concerns about safety and efficacy persist due to limited testing and lack of official approval.

community How to tell if finasteride is working for you

in Finasteride/Dutasteride 27 upvotes 1 year ago

Finasteride's effectiveness can be gauged by reduced hair shedding, but some users report it losing efficacy over time. Other treatments mentioned include Minoxidil, ketoconazole shampoo, and QR678, with mixed results.

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Learn

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learn sh-Polypeptide-7

Are there any safety concerns or allergic reactions associated with sh-Polypeptide-7 in topical hair products? There are no published human studies on sh-Polypeptide-7 itself, so its safety is unestablished; research on cosmetic peptides as a class reports low irritation and rare allergy, and dermatologists advise patch testing a new scalp product.

learn Vitamin D

vitamin you should probably be taking for general health might also help your hair a little

learn Neem Oil

natural substance from Neem tree with medicinal and pesticidal properties

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learn Baicapil

Struggling with patchy hair loss like alopecia areata? Baicapil might help by reducing inflammation and reactivating growth. There is no published trial of Baicapil in alopecia areata. The anti-inflammatory and hair-density claims come from the ingredient's manufacturer and from laboratory work on its plant extracts, in people with androgenetic-type hair loss rather than autoimmune patchy hair loss.

learn Baricitinib

Baricitinib: Can I use it even if I don’t have a medical diagnosis but I have patchy hair loss? Use baricitinib only with a medical diagnosis of alopecia areata.

learn Vitamin C

Is your itchy scalp a sign that it’s missing vitamin C? Find out how it may help with patchy hair loss. An itchy scalp may indicate a vitamin C deficiency affecting hair health.

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Clinics

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Hair Loss Treatments
Cosmocare Dermatology, PRP Hair Face Treatment, STD Testing CenterDubai · AE

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