Here's why:
* Shampoo: Specifically designed for the scalp and hair, it cleanses and removes dirt, oil, and product buildup. It often contains ingredients that can help soothe and moisturize the scalp.
* Soap: While soap can cleanse the scalp, it can be harsher and may strip the skin of its natural oils, leading to dryness and irritation.
It's best to avoid:
* Bar soap: These can be too harsh and drying for the scalp.
In summary, while shampoo is specifically formulated for hair and scalp, soap can be used too. However, it's crucial to consider the potential for dryness and irritation when using soap. Ultimately, the best choice depends on individual preferences and scalp sensitivity.