Found on www.freestuffworld.co.uk/
Head to John Lewis:
"Thursday, if you bring any empty shampoo or conditioner bottle with you (any brand will do), you can trade it in for a bottle of Damage Reverse shampoo and conditioner from Ojon, worth £38."
Go here - www.guardian.co.uk/john-lewis-beauty/beauty-event-john-lewis-skin-care-winter-guardian-grazia