Lip Maximizer Serum

Dior Lip Maximizer Serum is the colourless version of the plumper — a clear emulsion that melts in and works on hydration as much as volume. Dior frames it as both an immediate volume effect and a longer-term change, with lips looking fuller the more consistently you use it.

What it actually does

• Hydrates for up to 24 hours, which is Dior's headline claim and the reason it can be worn day or night rather than only before makeup.
• Plumps quickly, then visibly over time. The brand describes a fast volume effect on application plus lips that look fuller with continued use.
• Hyaluronic acid is credited by Dior with the visible plumping effect, and mallow flower extract with contributing to lip hydration.
• Completely clear and universal, so there is no shade to match — it goes over or under anything.
• Dior's testing on 10 subjects reported intense hydration lasting a full 24 hours, a 74 percent rise in immediate hydration, and 2.9 times the hydration measured when it sat beneath Dior Addict Lip Maximizer, which is sold separately. A 10-person panel is small — treat it as a brand claim.
• Formulated without parabens, phthalates, mineral oil, sulfates (SLS and SLES), hydroquinone, retinyl palmitate, oxybenzone, coal tar, formaldehydes and formaldehyde-releasing agents, triclosan and triclocarban. Under one percent synthetic fragrance, gluten-free and, per Dior, cruelty-free.

How to use

1. On its own, any time you want hydration without colour.
2. As a primer under lipstick or gloss, since it is clear and will not shift the shade you put on top.
3. As an overnight treatment, which is where the 24-hour hydration claim earns its keep — apply before bed and leave it.
4. Layered under Dior Addict Lip Maximizer, which we sell separately, if you want the amplified hydrating effect Dior measured.

Is it right for you?

Questions

How is this different from Dior Addict Lip Maximizer?

This is the serum: clear, universal, built around 24-hour hydration and made to be worn by day and overnight. Dior also positions the two as layerable — its own figures show 2.9 times the hydration when the serum sits underneath Lip Maximizer, which is sold separately.

Does it tingle?

Dior does not describe any tingling or cooling sensation for this one. The benefits it lists are hydrating and plumping, with the volume effect attributed to hyaluronic acid rather than to an irritant-driven flush.

Is the plumping permanent?

No. Dior claims a fast volume effect plus lips that look visibly plumper over time with use — that is a cosmetic, hydration-driven result, so it depends on carrying on with the product.

Will it make my lipstick slide off?

Dior lists wearing it as a makeup primer as one of its intended uses, so it is meant to go underneath. Give it a moment to melt in properly before you apply colour on top — any lip treatment applied wet will move the lipstick around.

How long does delivery take, and how do I pay?

Delivery takes 3 to 21 working days, depending on availability. Working days exclude weekends and official holidays. Payment is by credit card, debit card, Instapay or mobile wallet — there is no cash on delivery.

Can I return it if I do not like it?

Only if something is wrong with it. Returns are accepted for defective, damaged or expired items, reported within 1 day of delivery, with the refund going to your original payment method within 15–30 days. Change of mind on an opened lip product is not covered.