Face
Superactive Serum
Our 15% vitamin C serum with 4% niacinamide, bakuchiol and turmeric
Sold and shipped by Amazon.
Three drops on my face and I am good. I am enjoying not having to wear makeup.
Full ingredients
Aqua (Water/Eau), Tetrahexyldecyl Ascorbate, Capric/Caprylic Triglyceride, Butylene Glycol, Niacinamide, Glyceryl Stearate SE, Sucrose Stearate, Lactic Acid, Tranexamoyl Dipeptide-23, Curcuma Longa (Turmeric) Root Powder, Bakuchiol, Sodium Hyaluronate, Citrus Glauca Fruit Extract, Terminalia Ferdinandiana Fruit Extract, Tocopherol, Gluconolactone, Calcium Gluconate, Xanthan Gum, Glycerin, Glycine Soja (Soybean) Oil, Citric Acid, Sodium Benzoate, 1,2-Hexanediol, Caprylyl Glycol, Ethylhexylglycerin, Potassium Sorbate, Phenoxyethanol
- Size
- 1 fl oz / 30 mL
- Texture
- A lightweight serum with a slight dewy feel at first that settles quickly and layers well under moisturizer and makeup.
Dermatologist tested*
Repeat insult patch test on 52 adults supervised by a consulting dermatologist, Princeton Consumer Research, 2023. No irritation or allergic reactions were observed.
About this product
The Superactive Serum is our most concentrated face formula. We built it for people who want to see their tone look brighter and more even, without juggling five different bottles.

What's inside
15% vitamin C leads the formula for a brighter look and antioxidant support. 4% niacinamide helps tone look more balanced and supports the skin barrier, which matters when a serum is this active. Bakuchiol, a plant-based alternative to retinol, helps skin look smoother, while turmeric and hyaluronic acid round it out with glow and hydration. There's no added fragrance.
What to expect
- In the first weeks: skin feels hydrated and looks more radiant.
- Over 8 to 12 weeks of daily use: a brighter, more even-looking tone, with dark spots looking less noticeable. Results build gradually and vary from person to person.
Vitamin C and sunscreen are a strong team. Daily broad-spectrum sunscreen helps keep new dark spots from forming, so your serum isn't working against the sun. Read how vitamin C helps with dark spots and see our sun protection FAQs.
Where it fits
Cleanse, apply the serum, then moisturize. Pair it with the Advanced Brightening Moisturizer and, once or twice a week, the Vitamin C Clay Mask. Our brightening routine walks through it step by step.
Find it in our Amazon store.
*This is general information and isn't medical advice. If you have a skin condition or concern, talk to a doctor or dermatologist.
Key ingredients

15% vitamin C
Stable vitamin C for a brighter, more even-looking tone and antioxidant support.
Read more: Vitamin C for Dark Spots and Hyperpigmentation: How It Works
4% niacinamide
Vitamin B3 helps tone look more balanced and supports the skin barrier, so the formula stays comfortable.

Bakuchiol
A plant-based alternative to retinol that helps skin look smoother and more refined.

Turmeric
Our signature glow ingredient, found across the Gleamin range.
Hyaluronic acid
Holds on to water for plumper, hydrated-looking skin.
A closer look

How to use
After cleansing, dispense 1 to 2 pumps.
Smooth evenly over your face and neck.
Follow with moisturizer. In the morning, finish with a broad-spectrum sunscreen.
Use morning and night. If your skin is sensitive, start once a day or every other day.
Who it's for
- Skin prone to dark spots and dark marks left after breakouts
- Dull, uneven-looking or rough-feeling skin
- Anyone who wants one serum that does a lot
What we tested
Dermatologist tested1
1. Repeat insult patch test on 52 adults supervised by a consulting dermatologist, Princeton Consumer Research, 2023. No irritation or allergic reactions were observed.
Questions about this product
Should I use the Superactive Serum in the morning or at night?
Both. Apply 1 to 2 pumps after cleansing, morning and night. In the morning, follow with moisturizer and a broad-spectrum sunscreen.
Can I use a 15% vitamin C serum on sensitive skin?
Many people can. The formula balances its vitamin C with niacinamide and hyaluronic acid. If your skin is sensitive, start once a day or every other day and build up.
Is it normal for a vitamin C serum to tingle?
A brief, mild tingle can happen with active serums, especially on dry or freshly exfoliated skin. Burning, stinging that lasts, redness or itching are signs to stop and rinse it off. Try again less often, and talk to a dermatologist if it keeps happening.
How long does vitamin C take to work on dark spots?
Give it 8 to 12 weeks of daily use. Dark spots build up over time and change slowly, so a gradual difference is normal, and results vary. Daily sunscreen helps a lot. Read more in how vitamin C helps with dark spots.
Can I use the serum with niacinamide or retinol?
The serum already contains 4% niacinamide, so there's no need to add more. If you use a retinol or other strong active, try the serum in the morning and the retinol at night, and introduce one new product at a time.
Customer reviews
562 reviews · 64% verified buyers
What people mention
Showing 6 of 562 reviews
Glory for my sensitive skin
it has helped to clear my skin of acne scars, prevent breakouts, and get rid of new acne bumps. It’s also great for sensitive skin, I haven’t had any negative reaction to it even when I first started using it and was adjusting to the formula. It’s very efficient and works fast. And even the customer support is very efficient, kind, and responds fast.
Gives me an unbelievable Glow and minimizes my pores
Great products! Very hydrating...
Great products! Very hydrating & non-irritating, in addition to lightening dark spots. I will definitely be ordering this bundle again.
These products have never let me down. My skin is healthier than it’s ever been.
Love it so much...
Love it so much
Sent the wrong products. I reached out to customer service no one wants to fixed it they preferred me to sent it all back
Reviews are shown word for word from customers who bought from gleamin.com since 2019.
Related articles
IngredientsVitamin C for Dark Spots and Hyperpigmentation: How It Works
How vitamin C works on hyperpigmentation, which forms stay stable, how to use it step by step with sunscreen, and what to expect over 8 to 12 weeks.
RoutinesBrightening Skin Routine: Morning and Night, Step by Step
A simple morning and night routine for a brighter, more even-looking tone: the right product order, a weekly mask, and tweaks for dry, oily and sensitive skin.
Inside our formulasInside Our Vitamin C Clay Mask: Every Ingredient Explained
The story and science behind our best-selling 10-minute mask: Kakadu plum, desert lime, finger lime, turmeric and clay, how it works and how to use it.The new Gleamin
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