Volumising & Strengthening Leave-In: the instant volume that's loaded with innovation

It is especially recommended for fine, fragile, weakened, or breakage-prone hair, as well as for those who feel their mane has lost density or needs more body in their day-to-day

12 of December of 2025
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m.lab Montibello
m.lab Montibello

The new VOLUMISING & STRENGTHENING LEAVE-IN from M.LAB is a leave-in treatment specially designed for those struggling with fine, fragile, or lifeless hair. Its great power: it provides instant volume and strength.

“Products like this are the most in-demand because they adapt to our pace of life: fast, effective, and with a natural finish. VOLUMISING & STRENGTHENING LEAVE-IN has already become an indispensable in our salon and clients adore it as a ritual at home,” states Carlos Queirós, director of Loretto Cabeleireiros  (Gondomar, Portugal).

Glow effect with every application

The data speaks for itself: from the first application, hair shows twice the volume and a 2.5 times stronger fiber, while 100% of users report feeling their hair is thicker and denser, with volume that is instantly noticeable.

The key to its effectiveness lies in its innovative formula, which combines arginine, an essential amino acid that strengthens the fiber, improves its elasticity, and protects it from external aggressions, with rice proteins and a carbohydrate complex that is activated by heat. This system adheres to the hair cuticle, creating an authentic “filling effect” that adds body, thickness, and density even to the finest hair.

“I especially recommend it for those who feel their hair has lost its vitality. The volume it provides is real, and the best part is that it doesn't weigh hair down. If you need more density in a few seconds, this is your product”, explains Patricia Calvache, director of the salon Pacaray Peluqueros (Madrid).

Lightweight, non-greasy, and with no hold, VOLUMISING & STRENGTHENING LEAVE-IN is the perfect ally for those seeking a natural yet visible finish. It is especially recommended for fine, fragile, weakened hair, or hair prone to breakage, as well as for those who feel their hair has lost density or needs more body in their day-to-day lives.

Its application is as simple as it is effective:

  • Apply to hair washed and towel-dried.
  • Dispense 2 pumps into your hand and distribute from roots to ends.
  • Comb through to distribute evenly.
  • Activate the volumizing effect with the heat of the hairdryer.

In addition to offering instant results, with continued use, hair is strengthened day after day, gaining body, thickness, and visible resistance

“Treatments to strengthen hair and prevent hair loss usually require weeks before they can be seen. In this case, VOLUMISING & STRENGTHENING LEAVE-IN is the perfect finishing touch to the rest of the M.LAB range: it offers that visible, instant result that everyone is looking for, while the rest of the treatment works in depth”, points out Ziortza Zarauza, director of Centro Beta (San Sebastián).