Online Exclusive

Firming Vegan Collagen Prep Serum Refill

$54

Online Exclusive

Firming Vegan Collagen Prep Serum Refill

$54

Firm. Plump. Rejuvenate.


Our 4-in-1 super serum firms, brightens, plumps, and hydrates in 4 weeks without irritation. Our skin philosophy is centered on this “prep step” - the essential, second step in your daily routine that delivers an immediate, healthy glow while conditioning skin over time. The Prep Serum “preps” skin to a balanced state after cleansing and prior to moisturizing, creating a nourished canvas that brings visible radiance and won’t pill under makeup.

Extend the life of your bottle with this refill pouch. Containing 50% more than our standard size - more product, more value and less waste.

A $69 value.

Free US returns

Available at

Hydrates

Cruelty Free

Suitable for sensitive skin

Fragrance Free

SUITABLE FOR SENSITIVE SKIN
VEGAN
CRUELTY FREE
DERMATOLOGIST TESTED
CLINICALLY TESTED
GLUTEN FREE
NUT ALLERGEN FREE

Delivers an Immediate, Healthy Glow

Firms, brightens, plumps, and hydrates without irritation

Our skin philosophy is centered on this “prep step” - the essential, second step in your daily routine that delivers an immediate, healthy glow while conditioning skin over time. The Prep Serum “preps” skin to a balanced state after cleansing and prior to moisturizing, creating a nourished canvas that brings visible radiance and won’t pill under makeup.

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Visible results in 30 days

BEFORE
AFTER 30 DAYS

Visible results in 30 days

97%

agree these products were gentle and non-irritating

92%

agree skin looks healthier

92%

 agree these products work better together

89%

agree skin appears more youthful

4.9
Rated 4.9 out of 5 stars
Based on 477 reviews
Total 5 star reviews: 452 Total 4 star reviews: 20 Total 3 star reviews: 3 Total 2 star reviews: 1 Total 1 star reviews: 1
99%would recommend this product
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477 reviews
  • JW
    Jennifer W.
    Verified Buyer
    How old are you? 55+
    What is your skin type? Combination
    May 6, 2026
    How old are you? 55+
    What is your skin type? Combination
    Rated 5 out of 5 stars
    Wonderful results!

    I absolutely love this product and so does my skin. Feels so light and refreshing and just the prep needed before my moisturizer is applied. Highly recommend!

  • SR
    S R. A. R.
    Verified Buyer
    How old are you? 35 - 44
    What is your skin type? Combination
    April 23, 2026
    How old are you? 35 - 44
    What is your skin type? Combination
    Rated 5 out of 5 stars
    Absolutely love it!

    I’ve been using the Prep Serum since its release, and I haven't used any other product since. I always have it with me on my travels, and I recommend it to everyone I meet.

  • T
    Tina
    Verified Buyer
    How old are you? 45 - 54
    What is your skin type? Sensitive
    April 21, 2026
    How old are you? 45 - 54
    What is your skin type? Sensitive
    Rated 5 out of 5 stars
    Thank you 😊

    I can already see a difference in my skin. I have sensitive skin with rosacea. The serum doesn't irritate my skin at all. I also appreciate having a refill option. Thank you for this product.

  • M
    Mary
    April 17, 2026
    Rated 5 out of 5 stars
    5 Stars

    Love my Outset routine and all other products I have from The Outset!!

  • SD
    seyi d.
    Verified Buyer
    How old are you? 25 - 34
    What is your skin type? Sensitive, Combination
    April 17, 2026
    How old are you? 25 - 34
    What is your skin type? Sensitive, Combination
    Rated 5 out of 5 stars
    Everyday use

    I love this product. I’ve been using it for about a year now, and my skin is noticeably smoother and clearer. It isn’t too heavy on the skin and also works very well under makeup.