yes, curly hair is fragile, but i would think that 4a type hair would not need a haircut every month,it just does not grow that fast!! she is either not cutting, or you are getting shorter and shorter hair as time goes on. i do think that is excessive.
any brush that is being used on dry hair or with heat is damaging. if you blow dry your hair, you should only use a diffuser and, if necessary, scrunch with your hands only.
i would definitely try someone new.
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3a, some 2c & 3b, medium texture, porosity normal, low elasticity
washing/cowashing, conditioning, protein tx: [I] curl junkie products
leave in:cj conditioners and treatments as leave in
styling: cj aloe fix gel, cj pattern pusha, cj honey butta leave in, cj cccc, cj ciab.
sealants - jane carter nourish & shine