What is the Reconstructive Mask 500? The Reconstructive Mask 500 ml is the pillar of in-salon protein reconstruction and the fundamental Step 2 of the Edelstein protocol. Engineered to seal active ingredients within the fibre through precise pH control, it transforms depleted, fragile hair into a compact, elastic, and luminous structure, restoring cuticular cohesion. Who it is for For the salon backbar and for hair that needs molecular sealing after intense chemical services. It locks protein complexes within the cortex for long-lasting results and is essential to preserve fibre integrity between technical treatments. Key ingredients Hydrolyzed Keratin — biomimetic protein that regenerates protein chains and strengthens the shaft Sodium Hyaluronate (Hyaluronic Acid) — creates a technical water reserve and visibly increases volume Pentylene Glycol — advanced humectant that retains moisture for prolonged silkiness Amodimethicone & Trideceth-12 — conditioning agents that smooth the cuticle and maximise light refraction Specifications Product type Reconstructing mask (Step 2) Size 500 ml (backbar) Key actives Keratin + hyaluronic acid + pentylene glycol Use Sealing step after the shampoo / treatment Range Reconstructive (Edelstein) Availability In stock in Switzerland Results The mask guarantees deep repair of damaged areas within the fibre. Hair immediately gains greater density, total manageability, and a drastic reduction in mechanical breakage during styling. The structure appears visibly healthier, stronger, and more resistant to external agents. Application protocol Preparation: after using the Reconstructive Shampoo, thoroughly towel-dry to remove excess water. Distribution: apply the mask section by section to the lengths and ends. Activation: massage each strand to promote molecular absorption. Millimetric distribution: use the Flexion (L) brush to distribute evenly and detangle without trauma. Processing time: leave on for 5 to 10 minutes, depending on the level of fibre damage. Rinsing: rinse completely with lukewarm water and proceed with drying. Maintenance & related products For severely compromised hair, pre-apply the Reconstructive Treatment (Fluid + Boost) and, without rinsing, proceed to Step 2 with the mask. Recommend the retail Reconstructive Mask 175 for home maintenance, pair with the Reconstructive Shampoo, and finish with the Reconstructive Fluid. FAQ How long do I leave it on? 5 to 10 minutes, depending on how damaged the hair is. Can I combine it with the Treatment? Yes. For severely compromised hair, apply the Reconstructive Treatment first and, without rinsing, proceed with the mask as Step 2. What is the difference from the 175 ml? Same formula: the 500 ml is the backbar format for the salon, while the 175 ml is the retail size for home maintenance. Full ingredients (INCI) Aqua (Water), Cetearyl Alcohol, Cetrimonium Chloride, Cocamide DEA, Amodimethicone, Trideceth-12, PEG/PPG-22/24 Dimethicone, Sodium Hyaluronate, Hydrolyzed Keratin, Pentylene Glycol, Citric Acid, Hexyl Cinnamal, Linalool, Parfum (Fragrance).