Redken Extreme Length Shampoo with Biotin is a hair product designed for those looking to strengthen and repair their hair while promoting hair growth. Biotin helps to strengthen the hair follicles and fortify the hair strands to prevent breakage and split ends. This shampoo also helps to improve hair elasticity and prevent future breakage. It is formulated with a blend of proteins, amino acids, and vitamins to nourish the scalp and promote healthy hair growth.

• Strengthens and fortifies hair: Redken Extreme Length Shampoo with Biotin strengthens and fortifies hair, making it less prone to breakage.

• Improves shine and luster: The shampoo helps to improve shine and luster, leaving hair looking healthier and more vibrant.

• Nourishes and hydrates: The shampoo deeply nourishes and hydrates the hair, leaving it feeling softer and smoother.

• Promotes healthy hair growth: Biotin helps to promote healthy hair growth, helping hair to grow longer and stronger.

• Sulfate-free formula: The shampoo is sulfate-free, making it gentle on hair and helping to protect color-treated hair.

Using Redken's Extreme Length Shampoo with Biotin is easy! First, wet your hair thoroughly in the shower. Next, apply a small amount of shampoo to your scalp and massage in a circular motion, working it through your hair from the roots to the tips. Rinse thoroughly and repeat if you feel it is necessary. After shampooing, follow with your preferred conditioner. Use this shampoo two to three times a week for best results.

Pros:
1. Contains Biotin, which is known to be beneficial for hair growth and health.
2. The shampoo is sulfate free and gentle, making it suitable for all hair types.
3. Helps strengthen and fortify hair, while also nourishing it.
4. Protects hair from breakage and damage due to styling.

Cons:
1. Expensive compared to other shampoos.
2. May not be effective for some hair types.
3. Contains artificial fragrances which may irritate some people's skin.
4. Contains a number of chemical ingredients which could be potentially damaging to hair.