10 Best Hair Smoothing Products 2026 in the United States

The Kerastase Nutritive 8H Magic Night Hair Serum is designed to hydrate and nourish dry hair overnight. It's suitable for all hair types and aims to reduce frizz and detangle hair by morning. The serum contains plant-based proteins and niacinamide, which help retain moisture and strengthen hair. It also protects hair from pillow friction, ensuring it remains smooth and shiny without transferring onto your pillow.

The application is simple: apply one to two pumps to dry or damp hair before bed and leave it in overnight, with no need to rinse in the morning. Users are recommended to use it three nights a week for optimal results. On the downside, the product size is relatively small (3.04 Fl Oz), which might require frequent repurchasing for those with longer hair or those who use it regularly.

Additionally, while the citrus scent may be pleasant for some, it could be overpowering for others. This product is ideal for individuals experiencing dryness and frizz, looking for an easy-to-use overnight treatment to improve their hair's health and appearance.

The Redken One United Leave In Conditioner is a versatile hair-smoothing product designed for all hair types. It combines a leave-in conditioner and heat protectant spray, making it a practical choice for those who frequently blow-dry or heat style their hair. The product is enriched with nourishing coconut oil, which helps maintain hair vibrancy and smooths frizz, a significant advantage for anyone dealing with dry or porous hair. It's free from sulfates and parabens, making it a safer option for those concerned about harsh chemicals.

Users can apply it in multiple ways: as a rinse-out treatment for lightweight conditioning, a leave-in on damp hair for added strength, or with other styling products for enhanced softness and manageability. The heat protection feature is robust, safeguarding hair up to 450 degrees Fahrenheit, which is ideal for intensive styling routines. However, it may not provide a strong hold and finish, which could be a drawback for those looking for a more defined or styled look.

The liquid spray form makes it easy to apply, but it might be less convenient for those who prefer cream or serum textures. This product is a solid choice for anyone looking for a comprehensive hair treatment that detangles, nourishes, and protects from heat, though it might not be the best for achieving a firm hold or specific styled finish.

Redken All Soft Shampoo is a nourishing product designed specifically for dry hair. Its main ingredient, argan oil, is known for its hydrating and softening properties, making it suitable for those with dry or brittle hair. The shampoo aims to deeply moisturize, hydrate, and add shine to the hair, making it silky soft and manageable. It is also safe for color-treated hair, which is a significant advantage for those who dye their hair regularly.

The product is part of the All Soft Collection, which includes other items aimed at restoring and softening hair, ensuring a comprehensive hair care routine when used together. The suggested use is simple: apply to wet hair, lather, and rinse, making it easy for daily use without any complex steps. One of the shampoo's notable strengths is its ability to condition hair 15 times more effectively when paired with the Argan Oil Conditioner.

However, it's important to note that this might imply additional cost if one wants to achieve the maximum benefit by purchasing the entire set. Also, while the product is suitable for fine to medium hair types, those with very thick or coarse hair might not experience the same level of effectiveness. The scent of argan oil could be a plus for some users, but it might not appeal to everyone. Redken All Soft Shampoo is a good option for individuals with dry, color-treated hair looking for a product that offers deep hydration and a silky finish.