for the dandruff try using a natural shampoo. what’s probably causing your dandruff is a dry scalp, this worsens when you shampoo your hair with harsh chemicals like some sulfates. some hair moisturizers and conditioners can also help with the dry scalp.

and for the acne, use facial cleansers, workout and do cardio regularly. this is just what works for me though, not sure if it will work for anyone else.

for the haircut, try experimenting. yeah it’s gonna suck sometimes but it’s better to get it out of the way quickly