It is not sure whether a blowout is bad or good for your curly hair, because every hair is different – hair texture. Using heat on your curly hair can be risky, but some may opt for blowout treatment on their 4C hair type. blowout hair treatment is to check how long the hair has become. This will give break to your hair from styling out the different hairstyles and let keep it simple and total puff. The blowout treatment is mainly done to straighten the naturally curly hair.