Product shot of goop Youth-Boost Peptide Serum.

Gwyneth's Pick

goop Beauty

Youth-Boost Peptide Serum

Gwyneth's Pick


/ $135.00 with subscription

Size:Select a size



goop Beauty

Youth-Boost Peptide Serum


/ $135.00 with subscription

Size:Select a size



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For youthful, healthy-looking skin, this powerful, clinically tested all-in-one peptide serum takes a 360-degree approach to target key signs of aging—wrinkles, hyperpigmentation, texture, firmness, elasticity, radiance, barrier support, and more. The results surprised even plastic surgeon Dr. Julius Few, who conducted the clinical trials. “These are some of the most powerful results we’ve ever seen with a topical treatment,” says Few. 

Gwyneth was surprised, too. “I saw a noticeable difference in my skin after trying it for a week, and the results only got better from there,” she says. “The before-and-afters are pretty amazing to look at—the way it works for every skin type—and along with all the visible benefits, I love how moisturizing it is.” 

Made with peptides to address the look of wrinkles and collagen loss, ceramides and bifidus postbiotics for skin barrier support, phytoactive paracress and astaxanthin-rich microalgae for firming and lifting, and black tea ferment and niacinamide for glow and a more even complexion, along with safflower oleosomes and dragon’s blood to moisturize, the face serum works beautifully for all ages, all skin tones, and all skin types (including sensitive skin). 

Use it morning and night to see improvements in skin firmness, the appearance of static and dynamic wrinkles, elasticity, volume loss, luminosity, smoothness, tone and discoloration, visible pores, pigmentation, vascularization, and moisturization. 

  • 30mL / 1 fl oz
  • Improves firmness and elasticity. 
  • Improves texture and smoothness. 
  • Improves luminosity. 
  • Leaves skin looking significantly smoother and healthier. 
  • Improves skin hydration. 
  • Visibly reduces the appearance of fine lines and wrinkles. 
  • Minimizes the look of pores and pigmentation. 
  • Evens skin tone and reduces the look of dark spots and discoloration. 
  • Comfortable and gentle enough for everyday use. 
  • Appropriate for all skin types, including sensitive.

Clinical Study 1: Global Ranking Scale Evaluation 
The Global Ranking Scale (GRS) evaluates key aesthetic parameters, grading from 0 (none) to 3 (severe).  

After six weeks of use:* 

  • Visible reduction in the look of static and dynamic wrinkles. 
  • Significant reduction in surface roughness and texture, including signs of sagging. 
  • Visible improvement in skin tone, evenness, and luminosity (including a reduction in redness). 
  •  Visible improvement in skin elasticity and hydration. 

*Based on a clinical study of 19 women and men between the ages of 21 and 60.

Clinical Study 2: Expert Evaluation of Panelists 

An independent review was conducted by a board-certified physician.  
After six weeks of use:** 

  • 95% demonstrated improvement in dehydration. 
  • 95% demonstrated improvement in the look of vasculature and redness. 
  • 90% demonstrated improvement in surface roughness. 
  • 84% demonstrated improvement in pigmentation. 
  • 79% demonstrated improvement in the look of visible pores. 

**Based on an independent evaluation in a blinded clinical setting using before-and-after images after six weeks of twice-daily treatment. 

After six weeks of use:*** 

  • 100% said the serum was gentle enough for everyday use. 
  • 95% saw a significant improvement in the radiance and luminosity of their skin. 
  • 95% said the serum was comfortable and soothing on skin. 
  • 94% were very satisfied with improvements in skin. 
  • 89% saw a significant improvement in the texture and smoothness of their skin.

***Based on a consumer questionnaire of 19 women and men between the ages of 21 and 60 after six weeks of twice-daily use.

Dispense a dime-size amount onto hands and gently massage onto face and neck. Apply morning and night. 

Key Ingredients:

For targeting firming and lifting: 

  • Astaxanthin 
  • Paracress  

For addressing the look of lines, wrinkles, crepiness, and sagging skin: 

  • Peptides  

For promoting skin repair: 

  • Postbiotics (10% bifidus ferment) 
  • Ceramides 

For enhancing moisturization: 

  • Dragon’s blood extract 
  • Safflower oleosomes 

For increased glow: 

  • Black tea ferment 
  • Niacinamide

All Ingredients: Aqua/Water/Eau, Bifida Ferment Lysate, Carthamus Tinctorius (Safflower) Oleosomes, Glycerin, Niacinamide, Saccharomyces/Xylinum/Black Tea Ferment, Capryloyl Glycerin/Sebacic Acid Copolymer, Propanediol, Daemonorops Draco (Dragon’s Blood) Extract, Aloe Barbadensis (Aloe) Leaf Juice, Squalane, Haematococcus Pluvialis Extract, Acmella Oleracea (Spilanthes) Extract, Xanthan Gum, Triethyl Citrate, Sodium Benzoate, Sodium Levulinate, Potassium Sorbate, Salicylic Acid, Tocopherol, Carnosine, Gluconolactone, Ceramide Np, Saccharomyces Ferment Filtrate, Sodium Hyaluronate, Sodium Phytate, Citrus Limon (Lemon) Fruit Extract, Coriandrum Sativum (Coriander) Fruit Oil, Maltodextrin, Tetrasodium Glutamate Diacetate, 3-hexanol, Canarium Luzonicum (Elemi) Gum Nonvolatiles, Piper Nigrum (Pepper) Fruit Oil, Citric Acid, Heptapeptide-7, Lecithin, Boswellia Carterii (Frankincense) Oil, Citrus Aurantium Dulcis (Orange) Peel Oil, Commiphora Myrrha (Myrrh) Oil, Vetiveria Zizanoides (Vetiver) Root Oil, Zingiber Officinale (Ginger) Root Oil, Calcium Gluconate, Ferula Galbaniflua (Galbanum) Resin Oil, Limonene, Linalool.

Beauty as wellness.

For us, beauty comes from the inside out. We use clinically proven and best-in-class ingredients at active levels to create luxurious skin, hair, and body essentials that deliver high-performance results and enliven the senses with exquisite textures and beautiful scents.

Clean, to us, means that we vet our ingredients with strict attention to quality, while prioritizing ingredients that are ethically sourced and cruelty-free wherever possible. We also strive to use sustainable biobased sources that are nonpersistent in the environment. In addition, all our beauty products are formulated without silicones, formaldehyde donors, parabens, SLS, SLES, PEGs, polyacrylamides, TEA, DEA, phthalates, or synthetic fragrance, among many others that we proactively screen for based on published and ongoing scientific studies. Our approach to formulation is a future-forward consciousness about our health.   


The clean beauty movement isn’t perfect, though; it’s evolving—and our goal is to evolve with the science in the most transparent way we can. We source all the ingredients for our goop Beauty products with a high standard of safety and quality, while recognizing that despite our best efforts, trace levels of incidental chemicals may occur as a result of manufacturing and supply chain complexities. We are committed to making careful choices in our sourcing and formulation to minimize the potential presence of any trace amounts of incidental ingredients. 


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