The 10% off first purchase code is the main offer at I-On Skincare if you are ordering for the first time on the website. However, the Prime Day Sale running until 11 October 2026 gives all shoppers 25% off instead, making it a stronger choice for most baskets.
First time customers placing an order on the website should compare the first purchase code against the Prime Day Sale. The 10% off first purchase code cannot be combined with other offers, but the Prime Day Sale beats it for any basket size. On a $100 order, for example, the first purchase code saves $10 to leave $90, while the Prime Day Sale saves $25 to leave $75. Use the Prime Day code unless it has expired by the time you shop.
Existing customers and all shoppers before the Prime Day Sale ends should use the Prime Day code for 25% off any order. On a $80 order, the code saves $20 to leave $60. On a $150 order, it saves $37.50 to leave $112.50. This code also cannot be combined with other offers.
Sale shopping is an alternative if you are buying from the discounted items. Selected skincare products are reduced by up to 52% while stock lasts, and a selection of products is on sale at up to 21% off. These are fixed markdowns on particular items, not codes, so they may apply to different products than the Prime Day code. You need to check the sale prices on your chosen items to see whether the marked down price after the sale discount leaves you paying less than after applying the Prime Day code to the regular price. The Gentle Deep Pore Cleanser is priced at $48 as a deal, and the Discovery Gentle Deep Pore Cleanser in the 10ml size is $10.
Subscribers can get 20% off subscription purchases while stock lasts. This is less than the Prime Day code's 25% off, so the code gives better value if you are not committed to the subscription model.
Free shipping applies to orders over $100 at I-On Skincare, so factor this into your total cost when comparing offers if your order clears that threshold.
When you have chosen your items, compare the final totals from the Prime Day code at 25% off against any applicable sale prices or subscription discounts. Take whichever leaves you paying the lowest amount. In the 12 months to October 2026, I-On Skincare offered just 1 code overall, so the Prime Day Sale at 25% off is a strong offer if the timing suits you.