

FREQUENTLY ASKED QUESTIONS
Who is the Fiber Diffuser recommended for and what benefits can you get?
How does the fiber diffuser help optimize the application of Keratin Fibers?
Why is it important to include the fiber diffuser in my application routine?
Why trust The Cosmetic Republic?
-
Toxic-free
-
Not tested on animals
-
Natural ingredients
-
Approved by experts
Ingredientes principales

- Regular price
-
€13,99 - Regular price
-
€13,99 - Sale price
-
€13,99
- Regular price
-
€9,99 €49,99 - Regular price
-
€9,99 - Sale price
-
€9,99 €49,99
- Regular price
-
€6,99 - Regular price
-
€6,99 - Sale price
-
€6,99
Bundle & Save
Complete your routine
What our customers say
Daniel GarcíaI had a question about which product was best for my hair type, and they gave me great advice on Instagram. It's a pleasure to work with a brand that truly cares about helping you.
Sara FernándezI discovered The Cosmetic Republic a few months ago, and it's been a total game-changer for my hair. The order arrived quickly, everything was perfectly packaged, and with details that demonstrate customer care. I always recommend them!
Laura MartínezI've tried many brands, but The Cosmetic Republic products really make a difference. You can tell the quality from the first use. My favorite: the Stem Cell Shampoo—it's amazing!
Carmen LópezI started using keratin fibers on the recommendation of a friend and I'm delighted. They're easy to apply and the change is immediate. I now also use the Hair Exfoliant and my scalp feels healthier.
Paula RodriguezI love the brand: natural ingredients, no chemicals, and very good products. It's clear they care deeply about the product and customer service.