Trichostasis Spinulosa Confirmed by Standard Skin Surface Biopsy

The conversation discusses using tretinoin for hair loss and whether applying SPF on the scalp is necessary if hair covers the treated areas. The user is considering this treatment despite having no completely bald patches.

Apply tretinoin at night and minimize sun exposure. Use sunscreen as a last resort due to its messiness and need for frequent reapplication.

Tazarotene may outperform tretinoin for hairline treatment with minoxidil, but lacks evidence. Tretinoin is recommended for the scalp, while tazarotene can be used on the face.

Use tretinoin three times a week, dermaroll once a week, and apply minoxidil daily, but avoid using all three on the same day. Tretinoin is preferred over hydrocortisone and should not be used immediately after dermarolling.

The conversation discusses the effectiveness of topical tretinoin as a monotherapy for hair loss, with users suggesting it may not be as effective as minoxidil or finasteride. The original poster is considering other options like a phenol peel and is concerned about the risks of derma rolling.

The user experienced increased hair shedding after adding tretinoin to their regimen of finasteride, minoxidil, and dermarolling, but noticed new vellus hairs appearing. They plan to restart tretinoin more gently, as some users suggest shedding indicates treatment effectiveness, while others warn it may cause severe thinning for a minority.