Please note that Royal Mail currently classes perfumes, nail polishes, flammable liquids and aerosols as "hazardous materials" and will only accept a limited number of these per parcel. Thanks to patented pH 4.5 Balancer Technology, hair is adjusted to the optimal pH value of 4.5 – the matrix around the cortex microfibrils is tightened and stabilised, keeping the colour pigments frozen deep inside the hair structure, providing the ultimate in colour protection. We're proud to announce that our mailing bags are made from recycled polythene and are also recyclable, and our bubble wrap is made from recycled plastic and is completely recyclable. Initially I used to go very light with it on my hair because I was scared it might add weight and I would end up with product build up on my hair. But nothing of the kind happened. While travelling for vacations, I ended up using it on a daily basis; had no choice after a daily dose of swimming. So I would literally spray away to glory because I didn’t want my hair drying up or getting spoiled due to constant air conditioning or the chemicals in the pool. Despite heavy handed application, it just does not weigh the hair down, nor is their any greasy or slimy feel on the hair.