DIA Light Acidic Clear Gloss transforms dull or warmed-up hair into salon-perfect brilliance. Its unique acidic, ammonia-free gel-crème not only corrects unwanted tones but also deeply conditions sensitised hair in one 20-minute step. Designed to follow any lightening or colour service, it seals the cuticle for a healthy-looking, high-shine finish.

Product Benefits

Neutralises & Refreshes: Acidic gel-crème formula tones lightened hair and revitalises faded lengths for subtle, luminous colour reflects.
Deep Conditioning: Acidic technology closes the cuticle, balancing hair and delivering up to 30 % more conditioned, healthy-looking hair.
Fluidified Texture: Improves the take-through of any DIA Light mix for smoother, faster application.
Customisable Pastelisation: Dilute and personalise shades to tailor tone intensity—ideal for bespoke gloss and pastel effects.
Ammonia-Free, Gentle Formula: Demi-permanent gel-crème without ammonia, perfect as a second step after lightening or coverage services.
No Lift, No Grey Coverage: Preserves the natural base colour—does not lighten hair or cover greys (for up to 70 % grey coverage, use DIA Color).

How to Use

After Colour Service
Complete your lightening or coverage service and towel-dry hair.
Mix
Combine chosen DIA Light shade with Diactivateur Developer at a 1 + 1.5 ratio (e.g., 20 g shade + 30 ml developer).
Pick Your Developer

6 Vol. Diactivateur for sensitised hair
9 Vol. Diactivateur for good-condition to slightly sensitised hair

Apply
Distribute evenly through dry, previously lightened or coloured lengths and ends—avoid roots.
Process
Leave on for up to 20 minutes, monitoring tone development.
Emulsify & Rinse
Add a little water to emulsify, then rinse thoroughly. Follow with a suitable salon conditioner before styling.

Product Specifications

Type: Acidic, ammonia-free demi-permanent gel-crème
Shade Range: Cool toning shades Levels 6–10
Developer Compatibility: 6 Vol. and 9 Vol. Diactivateur
Processing Time: Up to 20 minutes
Coverage: No lift; no grey coverage (for greys up to 70 % use DIA Color)
Application: Second step after lightening or coverage service
Ideal For: Corrective/pre-colouration; refreshing previously coloured lengths & ends; neutralising and toning highlights, balayage and lowlights

Why Choose L’Oreal DIA Light Acidic Gloss Clear?

DIA Light is engineered as the perfect finishing step after any lightening or coverage service, delivering precise toning and refreshing without lift or grey coverage. Its ammonia-free, acidic gel-crème closes the cuticle and balances hair, resulting in up to 30 % more conditioned, natural-looking shine. The uniquely fluid texture ensures even, effortless application, while the comprehensive Levels 6–10 cool shade palette lets stylists customise each gloss—from soft pastelisation to targeted tone correction. With predictable results and a conditioner-rich formula that protects sensitised hair, DIA Light Acidic Clear Gloss is an essential tool for consistent, salon-grade shine.

L'Oreal Professionnel Dia Light Acidic Gloss Clear 250ml