Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. 1. Hair relaxer products can cause hair loss. 2. Use a good herbal hair oil and shampoo for routine use. 3. Take an iron supplement and vitamin b12 supplement once daily for 3 months. If problem persists then consult a dermatologist. Thanks. Dr. Harshit bhachech. MBBS, DDVL.