Gielly Green’s The One System wins Best Sulphate-Free Shampoo and Best Hair Mask in the Good Housekeeping Institute’s Believe in Beauty Awards 2026.
Gielly Green, one of London’s most celebrated luxury salons, is delighted to announce that two products from its newly launched haircare line, The One System have won in the Good Housekeeping Institute’s Believe in Beauty Awards 2026.
After five months of analysis and lab testing, 539 Good Housekeeping members tried and tested hundreds of products, which were in turn debated by Good Housekeeping’s beauty editors and lab chemists to shortlist a selection of products that 'actually do what they say on the tin (or tub). No empty promises, no misinformation – just beauty solutions you can truly believe in’.
The One SHAMPOO has been awarded Best Sulphate-Free Shampoo. A gentle, sulphate-free micellar shampoo that removes impurities while adding shine and softness. Clean, vegan and sustainable, it nourishes, hydrates, and strengthens hair with over 90% natural origin ingredients. Good Housekeeping says: “This sulphate-free shampoo gave our testers’ hair a thorough clean without stripping the natural oils. It also achieved the best comb through score, which meant it was particularly fab at detangling.”
The One MASK has been awarded Best Hair Mask. A luxurious, deeply hydrating mask, which works from the outermost to the innermost parts of the hair fibre, providing extreme repair for the most damaged hair. Reducing breakage, enhancing shine, moisture and resilience, using 94% natural origin ingredients. Good Housekeeping says: “This once-a-week nourishing hair mask was described as “a miracle product” by one of our panel members, who was thrilled with the improved condition of their hair. It increased smoothness and helped make hair more manageable across the board.”
Gielly Green’s The One System is available to buy online and at 42-44 George Street, London W1U 7ES.