Similar to the Dettol deal last month, get a free 225ml Sukin hand sanitiser with any Sukin purchase. The hand sanitiser is out of stock online, so it's Click & Collect only. You need to manually add the hand sanitiser to your cart and the discount will be automatically applied. Looks like it's 1 free hand sanitiser per item purchased, so if you add 3 Sukin items to your cart then you should be eligible for 3 free hand sanitisers.
Note: Since it's out of stock online, to be able to add the hand sanitiser to your cart, you have to choose your C&C store and press 'Check availability' first.