Yes, they are necessary—especially after coloring or perming your hair. Salon-exclusive products with a high concentration of treatment ingredients are particularly beneficial, as they help moisturize, restore, and repair your hair. While there are over-the-counter products that also contain treatment ingredients, they tend to have lower concentrations and are often cheaper, so salon-exclusive products are highly recommended.

Another important factor is the amount you use. Using more does not mean better results. High-quality salon products with concentrated ingredients are effective even in small amounts. These products focus on quality, not quantity, so a light application is enough to repair and care for your hair.