Influence of Urea on the Coloring Ability of a Low-Temperature Coloring Method of Keratin Fibers Using Polyethyleneimine

A user is experiencing severe dandruff and hair loss, considering using ketoconazole shampoo 2% to manage these issues. They seek advice on application frequency and effectiveness, with suggestions to use it 2-3 times a week and to consider other treatments like finasteride for hair loss.

Tretinoin and microneedling both enhance hair growth through different mechanisms, with microneedling being considered safe for long-term use. Optimal microneedling needle length varies, but 0.8 mm is suggested for hair growth, and a Dermastamp is recommended to avoid skin damage.

The user experienced hair thinning and used microneedling, DHT blocking shampoo, and Biotin DHT blocking oil to address it, avoiding finasteride and minoxidil unless necessary later. They reported mild improvement but received mixed feedback, with some suggesting other conditions or treatments like ciclopirox shampoo.