The good shampoo: Revelation Volume Dessange , 30 €. It strengthens the soft hair and brings density without weighing it down. On the menu, vitamins, proteins and minerals associated with a high-tech sheathing polymer that wraps the fiber to make it thicker without stopping it. As a bonus: black pearl stuffed with trace elements Antiraplapla.

The care that pulp:

Daily: Volume Collagen Spray Décolle Roots of L'Oreal Paris, € 5.50 . A two-in-one formula that treats and stylizes to avoid superimpositions harmful to fine hair. Collagen polymers provide strength, thickness and guarding effect. The hairstyle flies with lightness. To use on wet or dry hair.

Weekly : Pantene Aqua Light Intensive Care, € 5.50 . A light repair mask that dreams fine and brittle hair that does not support heavyweight textures. Its cationic formula settles down where it's needed, and stays liquid for easy rinsing without a tacky finish.

The trendy hairstyle:

The flat bun To achieve this "no-volume" (as Odile Gilbert Jason Wu parade), it's easy: parting in the middle, the hair is brought to the top of the neck (ears covered) in a ponytail . Fix with Aveda's Lacquer Control Force, € 19.50 , then "trap" the tail under a cross elastic from top to bottom, before winding it into a bun and holding with pins.

The smart accessory: SOS Refresh by Tony & Guy, 6,90 € , Naturia by René Furterer, 9,30 € . Dry shampoos to bluff between washes when the hair "falls": tilt the head forward, lift the hair and spray below (not to see the white powder, especially if you are brown).

The star ritual: Volumorphosis, € 15 , in Kérastase salons. Applied wick on dry hair, this treatment releases a molecule that solidifies in contact with water during emulsion and rinsing, time to settle in the heart of the fiber. Result: a thickened material, "inflated" from the inside, which resists for up to ten shampoos.