Test to determine hair type. You can try a little test at home that might help you find out what type of hair you have. Therefore, wash your hair a day before you do the test. Take a piece of thin paper and press it on the scalp at the crown of your head and behind the ears. If you see greasy traces on the paper, you have an oily hair. If there is nothing on the paper, you have dry hair. You have a combination hair if it’s oily at the roots and dry at the ends.
As we have seen, combination hair means oily scalp and dryness for the rest of the hair. Try to use products specially designed for this type of hair. Another solution would be to use a shampoo for oily hair and apply a conditioner from the mid-lengths to the ends.
Oily hair
Oily hair has a heavy look and it lacks volume, which is destroyed by hairs that cannot be sustained from the roots. Oily hair means sebum excess, which is stimulated during the hormonal periods, such as pregnancy or puberty, or by intense exercising, sun exposure, or when using styling products.
Shampoo daily with a special cleanser and don’t use conditioner on oily hair. If your hair is oily only at the roots and not at the ends, apply conditioner just on the ends.
Always use a wide-tooth comb in order to brush wet hair starting from the ends towards the roots. Rinse hair with tepid water, as hot water will stimulate the excess of sebum. Excessive brushing can have the same effect on oily hair.
Pay attention to your diet and stay away from fried and oily foods, as well as from dairy products. Try to eat more fruits and vegetables.
Normal hair
This type of hair has a special shinning when it is freshly washed and styled. It normally needs more conditioner on the ends. It has a healthy, normal scalp. Always use a wide-tooth comb when your hair is wet, and brush it starting from the ends and continuing towards the roots. 
Dry hair
Hair becomes dry when the scalp’s sebaceous glands don’t produce enough sebum in order to cover the hair and prevent water to evaporate. Hair dyeing and any other styling tools using heat may dry the hair by destroying its structure, which leads to an insufficient moisturizing.
Damaged hair becomes more fragile, it breaks easily, it is rigid and has split ends. Usually, hair dries between ages when we turn gray as the body produces less sebum. Sun exposure and chlorine water can also dry your hair.
Dry hair has a lifeless and brittle look, and usually it has split ends. In order to keep it clean you only need to wash it once or twice a week. Protect and nourish dry hair using intensive treatments, and try to avoid heated appliances. Dry hair is even more fragile when wet, therefore don’t rub it with a towel as friction causes split ends, and let it dry naturally. Also, protect it against sun rays.
Dandruff
Dandruff is a skin disorder known as seborrhea that appears during the process of scalp’s cells growing. The scalp’s cells usually age, die and are replaced quickly. In a dandruff scalp, these cells are flaked off before they are dead.
Dandruff can appear in case you have an oily or dry scalp, or if your hair has been exposed to different chemical treatments. The excessive use of styling products or hair curlers can lead to dandruff, as well as insufficient brushing, washing and inadequate rinsing.
Carefully comb dry hair in order to avoid stimulating the sebaceous glands. Combing hair before washing might help get rid of dandruff. You should clean the brush and comb you normally use by keeping them into a solution made from tepid water and shampoo for about 30 minutes, and then rinse well.
