Sagot :
Answer:
- normal scalp ,oily scalp and dry scalp
- is the number of individual strands per square inch of you scalp
- hair is measured on it's diameter;it is divided as thin hair in 0.05-0.07mm,normal hair in 0.08-0.09m thic hair called terminal hair in 0.01-0.15mm.
- the ability of the hair to absorb moisture.