goop Youth-Boost Peptide Serum — 1 fl oz Hydrating Anti‑Aging Serum with Peptides & Niacinamide for Firmer, Smoother Skin

goop Beauty Youth-Boost Peptide Serum is a hydrating anti-aging serum that firms skin, reduces the look of fine lines and wrinkles, and helps restore a more even, luminous complexion.

This lightweight, non-greasy formula combines targeted actives — peptides, ceramides, niacinamide, bifidus postbiotics, and antioxidant-rich microalgae — to support the skin barrier, improve elasticity, and address signs of sun damage and aging. Designed for daily use morning and night, the serum layers under moisturizers and makeup, delivering measurable improvements in hydration, texture, and tone over weeks of consistent application.

How quickly will I see results from this peptide serum?

Visible shifts in radiance and hydration can appear within the first week, while more pronounced improvements in texture and the look of fine lines typically emerge with continued twice-daily use over several weeks. Clinical testing reported notable changes after six weeks.

• Initial glow and hydration often within seven days.
• Progressive smoothing and firmness with ongoing twice-daily application.
• Clinically evaluated improvements in dehydration, redness, and surface roughness at six weeks.

Which active ingredients make this serum effective for aging and sun-damaged skin?

The formula blends multiple classes of actives to target different aging mechanisms: peptides to promote a firmer appearance, ceramides and bifidus postbiotics to strengthen the skin barrier, and niacinamide plus black tea ferment to even tone and boost luminosity. Antioxidant-rich microalgae and phytoactives support a resilient-looking complexion.

• Peptides: help improve the appearance of elasticity and volume.
• Ceramides + bifidus: reinforce barrier function and hydration retention.
• Niacinamide + black tea ferment: reduce uneven tone and enhance glow.
• Astaxanthin-rich microalgae & paracress: contribute firmness-supporting antioxidant benefits.

Is this serum safe for my sensitive or combination skin?

goop formulated this serum to be broadly tolerable: it’s free of parabens, synthetic fragrances, silicones, sulfates, and other common irritants, and it is not tested on animals. Patch testing is recommended if you have reactive skin or are using prescription actives concurrently.

• Free from parabens, phthalates, silicones, SLS/SLES, artificial dyes, and fragrances.
• Clinically evaluated on diverse skin types and tones in blinded settings.
• Works with moisturizers and other targeted treatments; introduce gradually if combining with retinoids or exfoliants.

How should I integrate this serum into my skincare routine?

Apply on clean, dry skin both morning and night before heavier creams or oils. A small pump or dropper-sized amount is sufficient; gently press into face and neck. Follow with sunscreen in the morning to protect improvements in tone and texture.

• Use after cleansing and any lightweight toners/essences, before moisturizer.
• Apply twice daily for best results; layer sunscreen in the daytime.
• Compatible with most serums and moisturizers; consult a dermatologist when combining with prescription products.

Who is this for: goop Beauty Youth-Boost Peptide Serum suits people looking to address early to advanced signs of aging, uneven tone, or dehydration who prefer a clean, fragrance-free formulation. It is formulated for all ages, skin tones, and most skin types — including dry, oily, combination, and sensitive skin — when introduced carefully alongside other active treatments.

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.