The Ordinary Niacinamide & Hyaluronic Acid Skincare Duo
Pair two named skincare ingredients in one The Ordinary set: Niacinamide and Hyaluronic Acid. The product name identifies a duo of separate serums for a straightforward routine.
A paired set makes it possible to compare the serums together, rather than choosing a single ingredient by itself. Each ingredient appears in the listing title.
Consider this duo when you are looking for a two-serum set centred on niacinamide and hyaluronic acid. The clear pairing helps you browse the product range.
Add the set to your basket and review the listing for full product details and directions. The choice is straightforward: two named serums in one set.
About this product family
This product is part of our skincare family. It is not placed in an origin collection such as K-Beauty or C-Beauty, because the product page does not state where the brand comes from. Skincare products here include cleansers, serums, creams, eye care, lip care and masks.
How do I use it?
Follow the directions on the pack first, as they always come before this general guide. Many people apply skincare from the thinnest texture to the thickest: cleanser, toner or essence, serum, then moisturiser, with sun protection last in the morning. Eye products and lip products go on the area they are made for. Introduce one new product at a time, so it is easy to tell how your skin feels with it.
What about masks, patches and sets?
Sheet masks, eye patches and lip masks are made to stay on for a set time, so follow the time given on the pack. Sets and bundles can hold several different products, and each one may have its own directions, so check the pack of every item.
Who is it for?
Skin types and concerns differ from product to product. The product description and the pack say what each product is made for. If you are unsure whether something suits you, contact us before you buy.
Should I patch test first?
Yes, we recommend a patch test for any new skincare product. Apply a small amount to a small area, such as the inner forearm, and wait 24 hours. Stop using the product and rinse with water if you notice redness, itching, stinging or discomfort. Keep products away from the eyes unless they are made for the eye area. If you are pregnant or breastfeeding, or have a skin condition, check the ingredient list and speak to a pharmacist or doctor before use.
How should I store it?
Keep it in a cool, dry place away from direct sunlight and heat, with the lid or cap closed tightly. Wash your hands before using a jar, or use a clean spatula. Stop using a product if its smell, colour or texture changes noticeably.
How long can I use it once opened?
Look for the small open jar symbol on the pack. The number beside it, for example 12M, is the number of months the product is meant to be used after opening. If you cannot find the symbol on your pack, contact us and we will help.
Where do I find the ingredients?
The full ingredient list is printed on the pack. Please read it before use, especially if you have allergies or sensitivities.
Unsatisfied with your purchase? Return it within 15 days after its arrival. The first return of each purchase is free, up to 3 free returns per month, in total, per customer. Please observe that the voluntary return guarantee is offered for free up to 3 times per month within the first 15 days after the arrival. It's not possible to return items after this period. Please note that you must return the items in the same conditions you received them. That means that the items must be returned with no damage, full, and with no signs of usage*. We will reimburse the full or partial** amount paid to your original payment method.
*If the product arrived damaged, it's required to send a description of the damages and images or videos to showcase them. In this case, you can choose to receive a new item identical to the one originally ordered, with no additional costs, or, you can opt to receive a full refund in your original payment method. Please note that the damaged items must be returned, free of charge independently of your monthly voluntary return guarantee charges. If you choose to keep the damaged items, you can request a partial refund (up to 40% of the product's original cost) that will be deposited to your original payment method, and, a free charge of your monthly voluntary return guarantee will be deducted. **A full or partial refund will be issued to your original payment method after the items are received and inspected by the supplier, in the event of the refund being issued due to dissatisfaction with your purchase. We have a strong transparency policy and will keep you informed via e-mail every step of the way.
If you need to return an item but has already used your 3 free returns in the respective month, you'll be required to cover all costs of shipping and handling for the products being returned. We recommend sending all items to be returned in a single package, to avoid paying for additional taxes. We will contact you via e-mail with instructions on how to return the items.
Delivery and returns
Standard delivery to the UK from £3.99, free on orders over £200. Usually 8 to 10 business days.
Express delivery to the UK from £6.99, free on orders over £200. Usually 3 to 5 business days.
Worldwide: Standard 10 to 15 business days, Express 5 to 7 business days. Costs are shown at checkout.
Free returns within 15 days of arrival. Your first return on each purchase is free, up to 3 free returns per month for each customer. Items must be unused and in the condition you received them.
We email tracking details once your order ships. Times count from the shipping date and are estimates.
