1) Normal skin ( pH 5.5 to 5.6)

This type of skin is rather unfortunately rather rare . It is balanced between the dry and oily skin , but tends to go drier as years go by. The normal skin is firm with good muscle tone. It is soft and smooth and has a healthy colour. The pores are tight and the skin tends to have a translucent glow.

2)DRY SKIN There is a lack of lubrication caused by an under secretion of sebum from the sebaceous glands. The dry skin can also become dehydrated due to lack of moisture content. This skin condition can be easily recognized by fine line around the eyes and mouth.The skin is often rough and flaky on the nose and cheeks . Creepiness of the throat is characteristic.Those with dry skin are spared the problem of acne and spots, but as they get older the lack of skin lubrication and moisture dehydration can lead the early wrinkles and loss of elasticity. 

3) SENSITIVE AND ALLERGIC SKIN This skin is very fine in texture and usually have a tendency to broken capillaries on the cheek and sides of the nose, where   the skin is tightly drown and very thin. It shows a great tendency to become blotchy or break out in rashes after a too severe treatment or irritation  through strong preparations. Very sensitive to cold , heat and wind. 

4)MATURED SKIN These skin shows the characteristics of a dry skin but to a greater extent . They may look very parched , saggy and dehydrated if no skin care has been practiced during the younger years. There has been quite possibly negligence in proper cleansing and nourishing and also poor diet. The matured skin is deeply lined and loose due to lack of moisture and over  relaxed facial and throat muscles.

5)OILY SKIN Oily skin is coarser and thicker than the other types and have a greater tendency to develop open pores, blackheads and pimples. These appear especially around the nose and chin . They are generally caused by the sebaceous glands being clogged which in turn is caused by sluggish circulation. The very dilated pores, give the skin an orange peel like appearance due to the excessive production of sebum, which prevent the pores from closing.

6)COMBINATION SKIN The skin is quite common and is rather  difficult to treat . It is usually characterized by  an oily center panel or T- zone ,with pores and slight oiliness in these areas.Sometimes spots appear in these areas as well as clogged pores and blackheads. The cheeks and areas and throat are often quite dry.

Skin Type Sensitivity Reaction To Sun Example 1 Sensitivity Always burns, Never tans Red Haired, freckled 2 Sensitivity Always burns, minimal tan Fair skinned, blue eyed 3 Sensitivity Burns moderately, tans gradually Darker Caucasians, Indians  4Normal Burns minimally, Always Tans Mediterranean, Indians 5Normal Rarely burns, Tans profusely Middle Eastern, Latin, American, Indians 6 Insensitive Never burns, deeply pigmented Negroid,

 Indians  Woods Lamp Examination 

A wood lamp is a mercury vapor ultraviolet lamp with an incorporated woods filter that is opaque to all wavelengths except those between 320 and 400 nm. The 360 nm wavelengths from the mercury vapor lamp is primarily emitted by the lamp. The woods lamp is an important investigative tool in the diagnosis of many dermatoses.Estimation of extent of pigmentary disorders The woods lamp easily accentuates the distinction between slightly hypo pigmented and normal skin areas. Pityriasis, versicolor, pityriasis alba and of ash leaf macules tuberous sclerosis all show up clearly under the woods lamp, especially in light skinned individuals. Similarly the extent of lesions of vitiligo which may be difficult to detect in fair skinned individuals is clearly visible under woods lamp.In case of hyper-pigmented lesions the woods lamp accentuates epidermal memanin pigment as in freckles and most cases of melisma. In dermal pigmentation such as nevus of ota, post inflammatory pigmentation and some cases of melisma the contrast between pigmented and normal skin is diminished. Thus it is possible to localize the site of pigmentation using the woods lamp.