Could Product Build-Up on My Scalp Cause Temporary Hair Loss?

Good Day Dr. Rassman,

I am 21 this year. I have been using excessive amount of hair spray and wax for a period of 4 to 5 years, on top of poor washing of the head. As a result, my scalp has a shiny layer, what I think is product build-up, over it. After 2 years away from the products, the shiny layer has cleared considerably. I want to seek your opinion on this shampoo, Menscience Daily Shampoo (with AHA and BHA), on its ability to clear product build up and sebum from my oily scalp. Would such product build up actually cause temporary hair loss?

On addition, as I reside in a hot and humid country. Is it okay to shampoo twice a day, once in the day and once at night? If not, my scalp would feel very oily and uncomfortable.

Thank you so much! I really appreciate your effort!

Styling products like hair spray or hair wax will not cause balding, even if you leave it on. If the product is not a known safe product, you could damage the hair, but it would be doubtful that the damage would extend below the skin surface. Shampooing twice a day is not a problem either.