The natural look in hair is, without a doubt, the most desired trend among experts, celebrities, and influencers alike. In salons, the concept is clear: the goal is to achieve realistic tones with definition and luminosity, conveying beauty and health. At the same time, many women still want full coverage of their gray hair. This has been a challenge when using high-coverage coloring, as it has traditionally been associated with flat, solid colors that are often oversaturated. Furthermore, due to its characteristics, this type of coloring could only be applied to hair with a high percentage of gray, limiting its use exclusively to gray coverage services.

That was the case until now. With Montibello’s latest launch, there’s no longer a need to choose between naturalness and high coverage. UNDER changes the rules of the game, bringing high-coverage coloring to all hair types and needs.

The High-Coverage Revolution

One of UNDER’s major innovations is the advancement in pigment release technology, utilizing a dual color filling system.

In conventional coloring, pigments are grouped and layered, blocking light and adding opacity. However, UNDER places pigments individually and evenly, allowing light to pass through and delivering high-definition color without oversaturation or excessive darkening.

Moreover, UNDER can be used on all hair types—from fine to mature, thick, and resistant—offering vivid color, luminosity, and absolute clarity.

“Our clients, with their diverse profiles and needs, were asking for color that fully covered gray hair without losing a natural look. UNDER has achieved that perfect balance, allowing us to offer personalized, tailored results for each one of them”, says Mercedes Sastre, owner of the  3k Peluqueros salon in Madrid.

4 Color Services to Meet Every Need

UNDER offers four exclusive color services that provide real, natural results for all types of women, available at the best hair salons.

1. First Time Application

Are those first grays appearing? This service is ideal for those dyeing their hair for the first time. We first apply UNDER to the mid-lengths and ends, then to the roots, providing an even, pure color.

“Many clients covering their first grays worry about losing their natural look. UNDER surprises and wins them over with its luminosity and color vibrancy, achieving a natural color that preserves the vitality and beauty of their hair”, shares Christian Vendrell, owner of the  Identity salon in Valencia.

2. Full Head Application

This service is designed for clients who already dye their hair regularly but want a more natural color without sacrificing coverage. Here, we start by applying UNDER to the roots, then work through the mid-lengths and ends to fill the hair with color for long-lasting results.

“For clients who frequently rely on color services, UNDER provides perfect coverage without oversaturating and offers greater durability, keeping their hair vibrant for longer. It’s a safe bet!” says Imanol Oliver, director of  Oliver Peluqueros in Murcia.

3. Retouch Application

Sometimes, hair only needs a targeted gray touch-up in specific areas. Thanks to UNDER, we can blend it with the natural color and combine the service with other techniques that enhance the hair, such as lowlights—dark highlights to create depth and color durability—or highlights—light highlights that add a touch of brightness to natural hair only.

“With UNDER, we touch up specific sections seamlessly, blending perfectly with the natural tone. This is very useful when we perform other color techniques, like highlights”, explains Elena Rodríguez, owner of  Eldan’s Colorists, in Barcelona.

4. Regrowth Application

As time and washing go by, it becomes time to retouch the root color and revitalize the mid-lengths and ends. With this service, we perform a dual application: UNDER on the roots and a demi-permanent color—such as éclat—to refresh the mid-lengths and ends. The result is refreshed, fully gray-free hair.

“For root touch-ups, UNDER and éclat are an unbeatable combination. Grays are completely covered with a more natural finish. At the same time, we revive the tone and leave the hair feeling nourished, sealed, and with incredible shine”, says Montse Rodríguez, director and owner of the salón Matiz in Terrassa (Barcelona).

A Commitment to Innovation for Unprecedented Results

UNDER stands out for its coloring and hair care results, thanks to numerous innovations. The Glucamine Nature Tech hybrid technology combines the first naturally-derived alkalizing agent from biodegradable plant sugars with a low ammonia content. Additionally, Vegan Collagen Care, an innovative biotechnology-derived complex, brings resilience and protection to both the scalp and hair.

UNDER also cares for the planet: it’s a vegan color line with up to 93% naturally derived ingredients, a biodegradable formula, and 100% recyclable packaging made from 95% recycled aluminum. Find your Montibello salon and enjoy your UNDER color service today!