Kept purchasing this product for ages now, I normally would buy 250 ml size, however once decided to go for bigger one as it saves so much money

Seems expensive but it’s a litre so will last for ages. Has good long term effects when used alongside the other Olaplex products

I use this every time I wash my hair. I have naturally brown hair with blonde highlights, I don’t tend to use heat on my hair too much, maybe once a week or less and just feel this keeps my hair strong and healthy despite the bleach. A little goes a long way too.

My favourite shampoo of all time, leaves my hair feeling incredibly clean and soft! 

This is expensive stuff, but really makes my hair look sleek and healthy so I've been using it regularly. You only need a little at a time, so it's been lasting much longer than normal shampoo - and being able to buy it in a mega size, using my discount, makes it a no brainer.