The five primary skin types are as follows:

1. Normal: This skin type is well-balanced, neither too oily nor too dry. It has a smooth texture, few blemishes, and small pores.
2. Dry: Dry skin lacks sufficient moisture and may feel tight or rough. It is prone to flaking, irritation, and may show fine lines and wrinkles more prominently.
3. Oily: Oily skin produces excess sebum, making it look shiny and greasy. It often has enlarged pores and is more prone to acne and blackheads.
4. Combination: Combination skin exhibits characteristics of both oily and dry skin types. Typically, the T-zone (forehead, nose, and chin) is oily, while the cheeks may be dry or normal.
5. Sensitive: Sensitive skin is prone to irritation, redness, itching, and inflammation. It may react adversely to certain skincare products or environmental factors. Careful product selection is essential for this skin type.