4 doctors weighed in:
What hair treatments have long term consequences for hair health?
4 doctors weighed in

Dr. Karen Han
Dermatology
2 doctors agree
In brief: Trauma to hair bulb
The living part of the hair is the bulb, which is deep to the surface of the scalp.
Hair shaft is the non-living part. Hair dye, bleach, or perms do not cause permanent damage to the root of your hair, so the follicle can still regenerate another shaft. However, treatments that cause scarring such as hot combing or very tight braids or any process that cause scarring, resulting in permanent loss.

In brief: Trauma to hair bulb
The living part of the hair is the bulb, which is deep to the surface of the scalp.
Hair shaft is the non-living part. Hair dye, bleach, or perms do not cause permanent damage to the root of your hair, so the follicle can still regenerate another shaft. However, treatments that cause scarring such as hot combing or very tight braids or any process that cause scarring, resulting in permanent loss.
Dr. Karen Han
Dr. Karen Han
Thank
Dr. M. Christine Lee
Dermatology
In brief: Dyes, perms
Bleaching, color treatments, permanents, hair straightening treatments can all have harm effects on hair health especially if they're done on a constant frequent basis.
It's also possible to be allergic to the chemicals used in these treatments which would cause severe rash and hair loss. If you notice breakage of hairs and patches of hair loss, that could be related to the hair treatments.

In brief: Dyes, perms
Bleaching, color treatments, permanents, hair straightening treatments can all have harm effects on hair health especially if they're done on a constant frequent basis.
It's also possible to be allergic to the chemicals used in these treatments which would cause severe rash and hair loss. If you notice breakage of hairs and patches of hair loss, that could be related to the hair treatments.
Dr. M. Christine Lee
Dr. M. Christine Lee
Thank
Get help from a real doctor now
Dr. Keegan Duchicela
Board Certified, Family Medicine
10 years in practice
16M people helped
Continue
108,000 doctors available
Read more answers from doctors