Various substances, including cosmetic sponges, vein glue, chai tea, skincare products, and medicaments, can cause allergic contact dermatitis, and healthcare workers often react to N95 masks.
The article suggests that patients with Frontal Fibrosing Alopecia may have more contact allergies, but it doesn't prove that allergies cause the condition.
User experienced hair regrowth after eliminating scalp itch with RU58841. Others discussed itch and hair loss connection, and effectiveness of combining RU58841 with 5AR inhibitors.
Using a combination of Stemoxydine, minoxidil, dutasteride, and keto shampoo to achieve extreme hair and beard growth. The user has experienced positive results with terminal hairs at the hairline and an increase in density to their stubble after several weeks of use.