goop 
20% Vitamin C + Advanced Brightening Serum

This supercharged daily brightening serum contains 20% L-ascorbic acid—a potent dose of the purest form of vitamin C—to visibly target dullness and discoloration. Skin-soothing ectoin, an antioxidant powerhouse, works synergistically with ferulic acid to improve the look of skin tone and texture. The unique two-part system features a hydrating hyaluronic acid serum activator designed to be mixed with the antioxidant powder before the first use to maximize performance and freshness. The result is noticeably smoother, softer skin with a remarkable glow.

“You really see results on your skin—next-level glow, softness, smoothness—when you use this serum. People will ask you what you’re doing. And it stays potent till you finish it.” —Gwyneth Paltrow, Founder.

- Clinically proven to improve skin radiance.
- Diminishes the look of fine lines and wrinkles.
- Leaves skin looking healthy, youthful, firm, and luminous.
- Provides powerful antioxidant protection against environmental stressors.
- Unique two-part formulation preserves potency.
- Refines the appearance of skin texture.
- Suitable for all skin types, from dry to oily.
- Cruelty-Free
- Formulated without fragrance

Key ingredients:
- 20% Vitamin C (L-Ascorbic Acid): This is the purest form of vitamin C and a highly potent antioxidant. It is used here in a high concentration to protect against damaging free radicals and improve the tone, texture, and clarity of the skin.
- Hyaluronic Acid: This powerful humectant retains moisture in the skin, so it looks and feels hydrated and plump. It includes three different molecular sizes of hyaluronic acid; each penetrates a different layer of the skin to leave it soft, moisturized, and healthy-looking.

Clinical results:
100% of subjects showed a dramatic improvement in skin hydration.*

Consumer results after four weeks of use:**
90% agreed their skin looked and felt brighter.
90% agreed their skin looked and felt smoother.
85% said their skin looked healthier.

*Based on a four-week third party clinical study of 55 women between the ages 27 and 50. Clinical measurements were taken immediately after one use.
**Based on a four-week third-party consumer-perception study of 55 women between the ages of 27 and 50.

Before your first use:
Step 1: Unscrew the top of the serum activator and squeeze all the contents into the bottle containing the pure vitamin C powder.
Step 2: Screw the cap on the bottle and shake well until the powder fully dissolves.
Step 3: Replace the cap with the dropper; it’s now ready to use.

Daily: Smooth a few drops over face and neck, applying morning and evening. For best results, use within three months of serum activation. Store in a cool, dry place.