You can determine your hair type through the following methods:

1. Observation: Carefully observe the appearance and texture of your hair. Coarse hair tends to be rough, thick, and can feel coarse and difficult to manage. Fine hair is usually thin, soft, and lacks volume. Medium hair falls between coarse and fine hair, having some texture and elasticity.

2. Touch: Gently touch your hair with your fingertips. Coarse hair usually feels rough, coarse, and has a rough texture. Fine hair typically feels soft, smooth, and has a silky texture. Medium hair has a moderate texture and elasticity.

3. Elasticity: Take a small strand of hair and gently stretch it, then release and observe how it bounces back. Coarse hair tends to have strong elasticity and doesn't stretch easily. Fine hair has weak elasticity and easily stretches out. Medium hair has moderate elasticity and bounce-back.

4. Oil production: Observe the oil production of your hair. Oily hair tends to feel greasy and has a tendency to accumulate oil quickly. Dry hair may lack oil production, leading to dryness and frizziness. Normal hair usually has a moderate amount of oil production.

Please note that everyone's hair has individual variations and may not fit perfectly into a specific type. It's also possible to have multiple characteristics simultaneously. If you're still unsure about your hair type, it's recommended to consult a professional hairstylist or hair expert who can assess and provide advice based on your specific situation.