You can determine your skin type through the following methods:

1. Observation: Carefully observe the characteristics of your skin. Dry skin tends to feel dry, lackluster, and may have fine lines and flakiness. Oily skin may have excessive sebum production, prone to acne and shine. Combination skin may be oily in the T-zone (forehead, nose, and chin) and dry around the cheekbones. Normal skin generally appears smooth, soft, without noticeable oiliness or dryness.

2. Touch: Gently touch your facial skin with clean fingers. Dry skin may feel dry, tight, and lacking elasticity. Oily skin may feel greasy, smooth, and may even have a shiny appearance. Combination skin may have different textures in different areas, with some areas being oily and others being dry. Normal skin usually has moderate moisture and elasticity.

3. Oil secretion: Observe the oil secretion on your face. In the morning after waking up, gently press different areas of your face with a tissue and observe if there is noticeable oil residue on the tissue. If there is almost no oil on the tissue, you may have dry skin. If there is a significant amount of oil on the tissue, you may have oily skin. If only the T-zone has noticeable oil while other areas are dry, you may have combination skin.

4. Sensitivity: Observe how your skin reacts to external stimuli. If your skin is easily irritated by environmental changes, cosmetics, or skincare products, resulting in redness, itching, or allergic reactions, you may have sensitive skin.

If you're still unsure about your skin type, it's advisable to consult a professional skincare specialist or dermatologist who can provide you with an accurate skin assessment and recommendations.