L'Oréal Professionnel Dia Light 7.4 Demi Permanent Hair Colour is a professional demi-permanent gloss colour developed to enrich level 7 blonde bases with radiant copper warmth and luminous depth. Designed exclusively for salon professionals and freelance colourists, this ammonia-free formula delivers vibrant tonal enhancement while supporting the integrity of sensitised hair.

Powered by an advanced 1% Hyaluronic Acid Complex, Dia Light 7.4 helps maintain optimal moisture balance throughout the colouring process. Its acidic gloss technology smooths the cuticle surface, enhancing light reflection and leaving hair visibly shinier, softer and more polished. Ideal for intensifying warm blonde tones, refreshing faded copper lengths or adding vibrancy after lightening services, it provides seamless tonal refinement with exceptional gloss.

• Instant Hydration Boost: Replenishes lost moisture and combats dryness from the first application
• Stronger, More Resilient Hair: Helps reduce breakage by up to 3x after bleaching services
• Cortex Respect Technology: Maintains hair fibre integrity while delivering vibrant gloss colour
• High-Gloss Finish: Provides up to 82% more shine for luminous, reflective results
• Service Versatility: Ideal for glossing, toning and refreshing colour services
• Ammonia-Free Formula: Enhances client comfort while delivering professional performance

Expand your salon service menu with versatile colour applications:

• Hyaluronic Glossing: Add a high-shine topcoat for up to 6 weeks of luminous gloss colour
• Hyaluronic Toning: Neutralise unwanted undertones or enhance tone after lightening with maximum shine
• Hyaluronic Refreshing: Revive faded mid-lengths and ends with renewed vibrancy and gloss after root coverage

How To Use:

• Wear suitable disposable gloves
• Mix 60ml (1 tube) with 90ml of Diactivateur 6 vol. (1.8%) or 9 vol. (2.7%) using a 1:1.5 ratio
• Use exclusively with recommended Diactivateurs and follow the proportions indicated on the packaging
• When using a shaker bottle, openit immediately after mixing to avoid overflow
• Apply to dry hair using a bottle or brush. Development time: 20 minutes
• For toning, apply to shampooed, towel-dried hair. Develop for 5–20 minutes, depending on desired result
• Emulsify gently, rinse thoroughly and shampoo with Metal Detox or Vitamino Color Spectrum

L'Oréal Professionnel Dia Light 7.4 enables professionals to create vibrant copper-blonde services with enhanced hydration and fibre-respecting care. Combining bold reflect enhancement with advanced hyaluronic gloss technology, it supports premium salon colour services focused on shine, softness and long-lasting tonal brilliance.

Delivery Info: Aston & Fincher works with our suppliers to ensure your orders are complete and delivered safely and on time. We offer standard delivery times of 1-3 working days, though it will usually be the next day. Any delivery queries, please email us on businessservices@afteam.co.uk or call 0345 201 0825

Free delivery applies to baskets with a value of £50+ ex. VAT (£60+ inc. VAT), to UK mainland addresses. It excludes furniture and exceptional items; we will contact you in these cases.

During our online VAT Free promotional period, free delivery applies to baskets with a value of £83.33 ex VAT, which is the same as £100+ inc VAT.

Furniture and Special Order Deliveries: Furniture and special-order items have different times based on availability and production hours. Please contact us for any queries.

Lead-times are therefore given as a guideline only. You will be advised of lead-times on placement of order, but if items are required by a specific date, please contact us before placing orders online.

Once an order has been placed, it can take up to 5 working days for Aston & Fincher to receive the manufacturer's production confirmation. This will have an approx. date of dispatch from the manufacturers.

At this stage, Aston & Fincher will contact you to give you an estimated delivery date to the UK.

For more information, please refer to the Terms and Conditions