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The Lip Duo | The INKEY List

Never skip a day of fuller lips.

Rated 4.0 out of 5 stars
4.0 Stars (601 Reviews)
$24.68 (Worth $25.98) / 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 All Skin Types
  • Pregnancy & Breastfeeding Pregnancy & Breastfeeding


  • Lip Volume
  • Dry, cracked lips

Proud to be:

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

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Awards & Features

Delivery info

Standard tracked shipping


Free on oders $35+

Express tracked shipping

$15 (2-3 business days*, when ordered before 3pm EST)

*Find out more about shipping here.

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Rated 4.0 out of 5 stars
Based on 601 reviews
Total 5 star reviews: 314 Total 4 star reviews: 131 Total 3 star reviews: 46 Total 2 star reviews: 43 Total 1 star reviews: 67
601 reviews
  • Dalila
    Tripeptide Plumping Lip Balm
    Tripeptide Plumping Lip Balm
    I recommend this product
    Age Range 18 - 24
    Skin Type Combination
    Skin Concerns Redness, Texture, Breakouts, Fine Lines and Wrinkles, Acne Scars
    Rated 5 out of 5 stars
    8 hours ago
    Love this

    I love this lip balm and I think I will buy it again, I can really see the difference in hydration and volume.

  • Kelly K.
    Verified Buyer
    The Lip Duo
    The Lip Duo
    I recommend this product
    Age Range 35 - 44
    Skin Type Normal
    Skin Concerns Fine Lines and Wrinkles, Dryness, Plumping, Under Eye Circles
    Rated 5 out of 5 stars
    2 days ago

    Love this had great results

  • Kailee
    Verified Buyer
    The Lip Duo
    The Lip Duo
    I recommend this product
    Rated 5 out of 5 stars
    2 days ago
    Great Product and Company

    I am extremely happy with the quality of the lip treatment and will be purchasing more! I also was very impressed with the updates on my product. This was shipped via USPS, and with any other company I have never received updates as detailed and accurate (if any at all) as I did with The Inkey List. I received emails and texts anytime there was an update made (packed, labeled, shipped, and delivered). I also ordered this less than a week ago and it was on Thanksgiving so I did not expect to get it as soon as I did. Cannot recommend them or this product enough!

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