That's the best introduction we get, and it's the only reason you're reading this instead of an ad. So here's the short version of who we are.

Kostume Rio de Janeiro is professional hair care made for salons and sold to stylists across Brazil — a place where humidity, sun and salt work on your hair every single day. Protection there isn't a seasonal product. It's daily science, and it's why these formulas are built differently from what sits on a drugstore shelf.

We bring them to the U.S. unchanged: same formulas, same concentrations, same bottles that sit on a Brazilian backbar.

If bleach, color or a flat iron has left your hair snapping mid-length, this is where repair starts. A six-part K.Fiber complex — hydrolyzed keratin, creatine, hyaluronic acid, provitamin B5, cationic silicone and cationic polymer — works on the fiber itself rather than coating it.

It smooths the cuticle, reduces frizz and improves elasticity, which is what actually reduces breakage. It also leaves hair ready for whatever comes next, which is why stylists reach for it as step one.

• Strengthens weakened hair and helps reduce breakage
• Smooths the cuticle for less frizz and easier detangling
• Color-safe and gentle enough for daily use

The shampoo rebuilds. This is the step that makes it hold. A dense, slow-melting cream that works inside the fiber — hydrolyzed keratin to replace lost protein, creatine to fortify brittle strands, hyaluronic acid to restore elasticity.

Alongside them, mulateiro: an Amazonian bark extract long used in Brazil on worn hair, with avocado butter and cold-pressed argan and macadamia oils. A coin-sized amount covers mid-lengths to ends.

• Helps rebuild weakened strands and reduce breakage
• Helps rebalance pH to seal the cuticle
• Smooths frizz and makes detangling easier

If your hair feels coated and heavy, or has stopped responding to masks, the problem usually is not your conditioner — it is what is sitting on the fiber. Iron, copper and calcium from hard water bind to hair. So do chlorine, salt, silicone film and dry shampoo.

A Micro Peel Off complex of inorganic micro-exfoliants lifts those deposits, while a chelating agent binds the metal ions so they rinse away. Wheat protein, ginger and quinoa extracts keep the wash from stripping moisture out with them.

• Removes hard water minerals, iron and chlorine
• Clears product residue, silicone film and dry shampoo
• Reduces the brassy, dull cast that mineral buildup leaves on blondes

Mixed with water it turns into a warm, creamy mousse — the part nobody expects — and floods dry hair with moisture in five minutes flat. Softness and shine come back without the heaviness a thick mask leaves behind.

Hydrolyzed wheat protein and quinoa help hair hold onto that moisture. Macadamia and moringa oils restore elasticity and seal the cuticle. Ginger root extract brings antioxidants for everyday environmental defense.

• Deep hydration in a five-minute rinse-out
• Smooths frizz and rough texture, detangles fast
• Adds shine with no heavy buildup — made for color-treated hair

Mist it onto damp hair and walk away. It detangles on contact, helps control frizz through humidity, and helps shield the fiber from heat and UV — then leaves a satin finish that holds all day.

The formula runs on micellar technology: micelles that transform on contact with the hair fiber and absorb immediately, carrying moisture into the dry, porous places instead of sitting on top of them. That's why it never feels heavy.

• Detangles instantly, from mid-length to tip
• Helps protect against blow-dryers, flat irons and sun
• Satin, non-greasy finish — no buildup, safe on color

Below are some of are common questions: