The biggest mistake when washing your hair isn't in the shampoo you buy, but in how you apply it. According to stylists, most people use too much product and spread it only along the length of the hair - whereas shampoo is actually made to clean the scalp, not the strands. The hair rinses itself as the water and product lather; it's the scalp that needs the attention.

The solution is a simple five-point technique. Instead of pouring a big blob of shampoo into your hand and smearing it onto your hair, divide the scalp into five zones - the front, the two sides, the crown and the nape. Apply a little shampoo to each zone, add a little water to work up a lather, and massage gently with your fingertips, never your nails.

Why the fingertips? Because circular massage activates the scalp's microcirculation, and good circulation means stronger hair growth. A healthy scalp prevents excess oil, dryness and sensitivity - problems most people try to fix with expensive products instead of proper washing. "Healthy hair starts with a healthy scalp. That's the foundation everything grows from," experts say.

There's also a bonus few people mention: by concentrating the shampoo on the scalp, you use significantly less product per wash. One bottle lasts longer, the scalp is cleaner, and the hair looks better - without buying anything new. For regular care, experts recommend a weekly scalp exfoliation and an anti-hair-loss serum, especially in the transitional seasons when hair suffers the most.