3LAB The Serum

3LAB The Serum is listed here as a skincare product in a 40 ml size. Active ingredients can be effective and irritating at the same time, which is why the usual advice is to introduce one at a time. Start with a small amount every other day and build up frequency once your skin has settled. A discounted listing is only a saving if it is the same size and edition as the one beside it. Follow with SPF in the morning: plenty of active ingredients leave skin more sensitive to sunlight than usual. Add delivery to the cheapest price and you will see whether it is genuinely the best deal.