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Description
Kostume Rio de Janeiro USA K. Fiber Essential Repair Serum
The finishing step — a lightweight daily serum that seals the hair fiber, repairs the look of split, worn ends, and shields hair through heat styling. Use it before the blow-dryer and again after, on damp hair or dry.
Made in Brazil, where humidity, sun, and salt make hair repair a daily science rather than a seasonal fix. The formula is a blend of wheat germ, coconut, and Amazonian ojon oils suspended in an ultra-fine silicone base — so it absorbs fast, seals the cuticle, and never weighs hair down or builds up.
What it does
- Helps shield hair from heat during blow-drying and styling
- Seals the cuticle for immediate, lasting shine
- Repairs the look of dry, split ends
- Smooths frizz and improves manageability
- Absorbs fast with no greasy weight or build-up
- [Helps protect color from UV fading
Key ingredients you'll love
- Ojon Oil — nourishing Amazonian palm oil that moisturizes and repairs
- Wheat Germ Oil — rich in B vitamins for deep nourishment and shine
- Coconut Oil — helps hair retain moisture and resist dryness
- Vitamin E — antioxidant protection against environmental stress
- Ultra-Fine Silicone Blend — seals and smooths the fiber without build-up
Best for
- Dry, split, or worn ends
- Frizz-prone and humidity-sensitive hair
- Anyone who blow-dries, flat-irons, or curls regularly
- Color-treated hair needing a lightweight finish
- Fine hair that other serums weigh down
How to use
- Warm two to three drops between your palms.
- Apply through mid-lengths and ends, on damp or dry hair.
- Use before heat styling as a shield, and after as a finishing seal.
- No rinsing — it absorbs on its own.
Pro tip: Finish the reconstruction system with this after the K. Fiber Reconstructing Repair Shampoo and Conditioner.
Shop the K. Fiber Essential Repair Serum for smoother ends, brighter shine, and everyday heat protection.
Description
Kostume Rio de Janeiro USA K. Fiber Essential Repair Serum
The finishing step — a lightweight daily serum that seals the hair fiber, repairs the look of split, worn ends, and shields hair through heat styling. Use it before the blow-dryer and again after, on damp hair or dry.
Made in Brazil, where humidity, sun, and salt make hair repair a daily science rather than a seasonal fix. The formula is a blend of wheat germ, coconut, and Amazonian ojon oils suspended in an ultra-fine silicone base — so it absorbs fast, seals the cuticle, and never weighs hair down or builds up.
What it does
- Helps shield hair from heat during blow-drying and styling
- Seals the cuticle for immediate, lasting shine
- Repairs the look of dry, split ends
- Smooths frizz and improves manageability
- Absorbs fast with no greasy weight or build-up
- [Helps protect color from UV fading
Key ingredients you'll love
- Ojon Oil — nourishing Amazonian palm oil that moisturizes and repairs
- Wheat Germ Oil — rich in B vitamins for deep nourishment and shine
- Coconut Oil — helps hair retain moisture and resist dryness
- Vitamin E — antioxidant protection against environmental stress
- Ultra-Fine Silicone Blend — seals and smooths the fiber without build-up
Best for
- Dry, split, or worn ends
- Frizz-prone and humidity-sensitive hair
- Anyone who blow-dries, flat-irons, or curls regularly
- Color-treated hair needing a lightweight finish
- Fine hair that other serums weigh down
How to use
- Warm two to three drops between your palms.
- Apply through mid-lengths and ends, on damp or dry hair.
- Use before heat styling as a shield, and after as a finishing seal.
- No rinsing — it absorbs on its own.
Pro tip: Finish the reconstruction system with this after the K. Fiber Reconstructing Repair Shampoo and Conditioner.
Shop the K. Fiber Essential Repair Serum for smoother ends, brighter shine, and everyday heat protection.