Collagen gets the spotlight, but vitamin C is the nutrient your body actually needs to make it. Here's what each half of the Glow Duo does, what the research says, and who it's a good fit for.
Written by Vita Globe Editorial Team | Reviewed against peer-reviewed research and NIH guidance | Updated October 26, 2026
What does the Glow Duo do?
The Glow Duo pairs hydrolyzed collagen gummies with 250mg vitamin C gummies. Your body needs vitamin C to build and stabilize its own collagen, and vitamin C is one of skin's main antioxidants[1][2]. Hydrolyzed collagen has been linked to better skin hydration and elasticity in clinical trials[3]. Together they cover the building blocks and the nutrient that helps put them together.
Sources: NIH Vitamin C Fact Sheet · Nutrients 2017 · Int J Dermatol 2021 · Verified 2026-10-26
IN THIS ARTICLE
What's inside
- Collagen Gummies with Biotin, 60ct: 200mg hydrolyzed collagen (Types I, II, III, V and X) and 2,500mcg biotin per two-gummy serving, plus small amounts of vitamin C, vitamin E and zinc. Contains egg.
- Vegan Vitamin C Gummies 250mg, 60ct: a bright, orange-flavored gummy with 250mg of vitamin C.
What vitamin C does for collagen
Collagen is the main structural protein in your skin. To build it, your body uses vitamin C as a helper for the enzymes that link collagen fibers together and keep them stable[1]. Skin also holds a lot of vitamin C, where it works as an antioxidant against everyday environmental stress[2]. For a deeper dive, read Collagen and Vitamin C: Why They're Paired.
What the research says about collagen
A 2021 systematic review and meta-analysis of randomized trials found hydrolyzed collagen was associated with improvements in skin hydration and elasticity compared with placebo[3]. Results vary by dose and product, and many studies used powders at higher doses than a gummy delivers, so treat gummies as an easy, consistent daily habit. More in Does Collagen Actually Work?
The honest summary
- Vitamin C is required for your body's own collagen formation.
- Collagen supplements have encouraging research for skin, though results vary.
- Consistency over a couple of months matters more than any single dose.
Who it's for
- A good fit if your main goal is skin and you want a simple two-gummy routine.
- Consider the Radiant Skin Bundle instead if hair and nails are your bigger focus, since it pairs collagen with a higher-dose biotin gummy.
- Not a fit if you're vegan or have an egg allergy, since the collagen gummies contain chicken, bovine and eggshell membrane collagen.
Our option
The Glow Duo
Collagen Gummies with Biotin plus Vegan Vitamin C Gummies 250mg. Two full-size 60ct bottles, third-party tested, for less than buying them separately.
Frequently asked questions
Do I need to take them at the same time?
No. Taking both the same day is what matters. Many people take them together in the morning so they don't forget.
How long until I notice a difference?
In clinical trials, people typically took collagen daily for 8 to 12 weeks[3]. Give it a couple of months.
Is that too much vitamin C?
Adults need 75 to 90mg a day, and the upper limit is 2,000mg from all sources[1]. This duo is well under that, but count any other vitamin C supplements you take.
Sources
- National Institutes of Health, Office of Dietary Supplements. Vitamin C — Fact Sheet for Health Professionals. ods.od.nih.gov/factsheets/VitaminC-HealthProfessional
- Pullar JM, Carr AC, Vissers MCM. The Roles of Vitamin C in Skin Health. Nutrients. 2017;9(8):866. doi:10.3390/nu9080866
- de Miranda RB, Weimer P, Rossi RC. Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis. Int J Dermatol. 2021;60(12):1449-1461. doi:10.1111/ijd.15518
About the Vita Globe Editorial Team
The Vita Globe Editorial Team researches and writes our wellness content, working from peer-reviewed research, systematic reviews and guidance from bodies such as the NIH and the FDA. We cite our sources inline and update articles when the evidence changes.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for informational purposes only and is not a substitute for medical advice. Talk to your healthcare provider before starting any new supplement, particularly if you are pregnant, nursing or taking medication.
