As we all know, there are different human skins for different group. Once you use cosmetics, you need to know how to treat on different skins. There are four basic skin types as follows.

First is the normal skin. This type of skin has a fine, even and smooth surface due to its ideal balance between oil and moisture content and is therefore neither greasy nor dry. People who have normal skin have small, barely-visible pores. Thus, their skin usually appears clear and does not frequently develop spots and blemishes. This type of skin needs minimal and gentle treatment, but does still require maintenance.

Second is the dry skin. Dry skin has a parched appearance and tends to flake easily. It is prone to wrinkles and lines due to its inability to retain moisture, as well as an inadequate production of sebum by sebaceous glands. Dry skin often has problems in cold weather, which dries it out even further. Constant protection in the form of a moisturizer by day and a moisture-rich cream by night is essential. It is important not to over-exfoliate even in cases of extreme flaking, as this only dries out the skin further; gentle exfoliating using sugar, rice bran or mild acids are the most suitable, although they should not be used more frequently than once per week to avoid causing irritation and dryness.

Third is the Oily skin. As its names implies, this type of skin surface is slightly moderately greasy, which is caused by the over secretion of sebum. The excess oil on the surface of the skin causes dirt and dust from the environment to adhere to it. Oily skin is usually prone to blackheads, whiteheads, spots and pimple. It needs to be cleansed thoroughly every day, especially in hot or humid weather.

Finally is the combination skin. This is the common type of skin. As the name suggests, it is a combination of both oily and dry skin, where certain areas of the face are oily and the others dry. The oily parts are usually found on a central panel, called the T–Zone, consisting of the forehead, nose and chin. The dry areas usually consist of the cheeks and the areas around the eyes and mouth. In such cases, each part of the face should be treated according to its skin type. There are also skin care products made especially for those who have combination skin; these contain ingredients that cater to both skin types.