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The Lip Duo | The INKEY List

Never skip a day of fuller lips.

Rated 3.8 out of 5 stars
3.8 Stars (909 Reviews)
£20.90 (Worth £22.00) / 2 products


Set to be your new lip care obsession, keep one in your handbag and one on your desk to maximize your lip plumping every single day.

Clinically proven to plump lips by up to 40% in 4 weeks*, Tripeptide Plumping Lip Balm hydrates, repairs and plumps lips leaving them looking naturally fuller and healthier. Specially formulated for maximum fullness without any tingle or irritation, the plumping balm works over time to visibly increase lip volume. So now your lips not only look plumper but, ARE plumper. No filter, no filler, just fuller.

Formulated with 6% Tripeptide Complex, to visibly increase lip volume over time for plumper-looking, more defined lips, together with 6% Ultra Filling Spheres which deliver Hyaluronic Acid to the lip to plump, retain moisture and help to fill fine lines, Tripeptide Lip Balm enhances fullness, defines lip contours, and reduces the appearance of fine lines and creasing around the mouth. With continued use, the proof really is in the plump. For best results we recommend using at least 3-times per day.

This duo includes:
2x Tripeptide Plumping Lip Balm (10ml).

Suitable for:

  • All Skin Types
  • Pregnancy & Breastfeeding


  • Lip Volume
  • Dry, cracked lips

Proud to be:

  • Carbon Net-Zero
  • Recyclable
  • Vegan
  • Cruelty Free
  • Dermatologically Tested
  • Clinically Tested
  • B-Corp
  • Travel Size
  • Gluten Free

Delivery info

Standard tracked delivery (Royal Mail)

(2-5 working days*)

FREE standard tracked delivery on orders over £30

Express tracked delivery (Royal Mail)

£5.95 (Up to 2 working days if ordered before 4pm, excluding weekends*)

FREE express tracked delivery on orders £50+

*Find out more about Delivery here.

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Rated 3.8 out of 5 stars
Based on 909 reviews
Total 5 star reviews: 429 Total 4 star reviews: 181 Total 3 star reviews: 103 Total 2 star reviews: 71 Total 1 star reviews: 125
909 reviews
  • Bonnie
    The Lip Duo
    The Lip Duo
    Rated 3 out of 5 stars
    4 minutes ago
    3 Stars

    It is a nice lipgloss but I don’t believe it has any real effects

  • Birte
    Verified Buyer
    The Lip Duo
    The Lip Duo
    I recommend this product
    Rated 5 out of 5 stars
    21 hours ago
    Really good

    I have used this am and pm throughout the winter. A little goes a long way and it was the first time the corners of my mouth didn't crack during the winter. Unlike other customers I think it doesn't smell of anything and doesn't taste badly either (mind you, I don't apply it only to lick it off again). My lips are nice and smooth and the balm slightly plumps them which love. Will definitely reorder.

  • Mel
    Verified Buyer
    Tripeptide Plumping Lip Balm
    Tripeptide Plumping Lip Balm
    I do not recommend this product
    Rated 2 out of 5 stars
    22 hours ago
    Tastes bad

    I just started using this product so I can't speak to its effectiveness yet, but the smell and taste are too much for me to overcome. It's plasticky, like a lot of other reviews have mentioned. Also, the texture it quite slippy and oily, which I wasn't expecting and it's not exactly pleasant. Overall, I do not recommend and I will not be repurchasing.

    TI Profile picture for The INKEY List UK
    The INKEY List UK
    3 hours ago

    Hello Mel,

    Thank you so much for sharing your feedback! We're sorry to hear that you did not enjoy the taste of our Tripeptide Lip Balm, we have shared this with our wider teams for future consideration. If there is anything else we can do to assist, please reach out to our askINKEY team via 🖤

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