if you have received an email gift card, to click the activation link in the email and activate the gift card
if you do not have an account you will be prompted to create an account
the gift card £ value will be now be active on your account
then go to book in a treatment or buy a treatment credit and the gift card value will be automatically applied to your purchases until the value is used up
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if you have a gift card code, enter this as a promo code when checking out having added the relevant treatments to your basket.