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Frequently Asked Questions
- Q: What is the size of the KÉRASTASE Resistance Therapiste Hair Mask? A: The KÉRASTASE Resistance Therapiste Hair Mask is six point eight fluid ounces. This size is suitable for multiple applications, depending on your hair length and thickness.
- Q: What are the main ingredients in the hair mask? A: The hair mask contains wheat protein and native plant cells. These ingredients work together to repair and hydrate damaged hair.
- Q: What are the dimensions of the product packaging? A: The packaging measures eight point seventy-four inches in length, eleven point seventy-three inches in width, and three point twenty-three inches in height. This compact size makes it easy to store.
- Q: How do I apply the hair mask? A: Apply a quarter-sized amount to wet hair, focusing on the mid-length to ends. Massage gently through each strand and leave it on for five to ten minutes before rinsing.
- Q: Can I use this hair mask daily? A: Yes, the KÉRASTASE hair mask can be used daily. Its gentle formula allows for regular use to maintain healthy and nourished hair.
- Q: Is this hair mask suitable for all hair types? A: This hair mask is designed for very damaged and overstressed hair. While it is beneficial for weak hair, those with less damaged hair may find it too intensive.
- Q: How should I store the hair mask? A: Store the hair mask in a cool, dry place away from direct sunlight. Ensure the cap is tightly closed to maintain its effectiveness.
- Q: What is the shelf life of the hair mask? A: The shelf life of the KÉRASTASE hair mask is typically two to three years if unopened. Once opened, it is best to use it within twelve months for optimal results.
- Q: Is this product safe for color-treated hair? A: Yes, this hair mask is safe for color-treated hair. It helps to strengthen and nourish hair without stripping color.
- Q: What will this mask do for my hair? A: This mask intensely repairs hair from root to tip, strengthens the fiber, and prevents future breakage. It leaves hair revitalized, smooth, and shiny.
- Q: How does this mask compare to other KÉRASTASE products? A: The KÉRASTASE Resistance Therapiste Hair Mask is specifically formulated for very damaged hair, while other products in the line target different hair concerns, such as hydration or volume.
- Q: Can I use this product with other hair treatments? A: Yes, you can use this hair mask alongside other treatments. For the best results, consider using it with the KÉRASTASE Resistance Extentioniste Shampoo and Conditioner.
- Q: What if my hair feels greasy after using this mask? A: If your hair feels greasy, you may be applying too much product. A quarter-sized amount should suffice for effective treatment.
- Q: Is this product cruelty-free? A: KÉRASTASE is committed to not testing on animals, making this hair mask cruelty-free. You can use it with confidence knowing it adheres to this principle.
- Q: Will this mask help with split ends? A: Yes, the KÉRASTASE Resistance Therapiste Hair Mask helps to repair and hydrate the hair, which can reduce the appearance of split ends and prevent future damage.

