# Dual-Care Hair Serums Kerastase's Hair Care Product Protects in Two Stages By Laura McQuarrie | Published 2015-05-23 | Fashion Source: Trend Hunter, https://www.trendhunter.com/trends/hair-care-product References: [refinery29](http://www.refinery29.com/bi-phase-beauty-products?source_utm=feed&utm_medium=rss) & [kerastase](http://www.kerastase.com/en/hair-care-new-resistance/serum-therapiste) [Kérastase's](https://www.trendhunter.com/trends/kerastase) Sérum Thérapiste is a hair care product that has a unique formula designed to repair tresses in two stages. As a [bi-phase beauty product](https://www.trendhunter.com/trends/restyling-hair-serum), the serum consists of an oil and a cream topcoat, which come together to repair hair fibers and protect against the use of heat. Although these ingredients would normally repel one another, the use of both at once brings together more benefits in a single product. The hair care product is meant to be applied to towel-dried hair, promising to leave hair looking and feeling like new, with no broken strands. The use of Kérastase's Sérum Thérapiste is meant to be step three in the brand's cleanse, treat and texturize beauty ritual, following the use of its Soin Premier Thérapiste pre-shampoo conditioner and [Bain](https://www.trendhunter.com/trends/oseree) Thérapiste shampoo. ## Trend Insights (Trend Hunter) - Score: 4.2/10 - Popularity: 43% | Activity: 74% | Freshness: 8% - Audience gender: 10% men, 90% women - Primary generations: Millennial, Gen X - Top markets: North America ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Fashion](https://www.trendhunter.com/fashion) > [Cosmetics](https://www.trendhunter.com/cosmetics) ## Key Themes ### Why This Trend Is Growing - **Dual-phase Hair Care:** Using a two-stage formula, hair care products can now repair and protect hair in a single application. - **Combining Conflicting Ingredients:** The use of ingredients that would normally repel each other in a single product creates new opportunities for enhanced benefits. - **Innovative Hair Repair Techniques:** Hair care brands are developing unique formulas and rituals to achieve optimal results in repairing damaged tresses. ### Industries Being Reshaped - **Beauty and Personal Care:** Beauty brands can explore the potential of dual-phase hair care products to offer consumers more effective and convenient solutions. - **Hair Styling Tools and Accessories:** Companies in the hair styling industry can leverage the demand for heat protection products by offering advanced tools that enhance the benefits of dual-care hair serums. - **Hair Salon and Spa:** Hair care professionals can incorporate dual-phase hair care products into their treatments to provide clients with a more comprehensive and innovative hair repair experience. ## Related on Trend Hunter - [Nourishing Hair-Hydrating Oils](https://www.trendhunter.com/trends/kerastase.md) - [Frizz-Fighting Hair Serums](https://www.trendhunter.com/trends/mare-hair-serum-sale.md) - [Two-Step Scalp Care Systems](https://www.trendhunter.com/trends/scalp-care-system.md) - [Modern Daily Hair Serums](https://www.trendhunter.com/trends/daily-hair-serum.md) - [Kintsugi-Inspired Hair Serums](https://www.trendhunter.com/trends/ultimate-reset-overnight-care-serum.md) - [Growth-Promoting Hair Care Solutions](https://www.trendhunter.com/trends/hair-care-solution.md) - [Serum Shampoo Releases](https://www.trendhunter.com/trends/serum-shampoo.md) - [Aromatic Molecular Hair Oils](https://www.trendhunter.com/trends/absolute-repair-molecular-biphase-oil.md) - [Summer Haircare Promotions](https://www.trendhunter.com/trends/kerastase-2.md)