Key takeaways
- Collagen is the main structural protein in the deeper layer of your skin, and your body's own production gradually slows with age.
- Controlled trials of collagen peptides used 2.5 g to 10 g a day for 8 to 12 weeks, and measured outcomes such as skin elasticity and hydration.
- There is no single "magic" dose. What matters is a dose inside the studied range, taken consistently for long enough.
- Every dose should be printed on the label. Proprietary blends make that impossible to check.
What collagen does in your skin
Your skin has two main layers. The deeper one, the dermis, is held together by a network of protein fibres, and most of that network is collagen, mainly Types I and III. Think of it as the scaffolding that gives skin its structure. As we get older, the cells that build this scaffolding, called fibroblasts, gradually make less of it, and sun exposure, smoking, poor sleep and stress all add wear.
What happens when you take collagen peptides
Collagen peptides are collagen that has been broken into smaller pieces so they dissolve in water and digest easily. Like any protein, they are broken down further in your gut into amino acids and very small peptides, which are then absorbed. Collagen is unusually rich in amino acids such as glycine, proline and hydroxyproline.
Laboratory research suggests that some of these small collagen-derived peptides can act as signals to fibroblasts. That part of the science is still developing, so the more useful question for you is a practical one: what happened in controlled human trials?
What the human trials measured
- Proksch et al. (Skin Pharmacology and Physiology). 69 women aged 35–55 took 2.5 g or 5 g of collagen peptides, or a placebo, once a day for 8 weeks. Both collagen groups showed a statistically significant improvement in skin elasticity compared with placebo. Changes in skin moisture were seen in a subgroup but did not reach statistical significance. (study link)
- de Miranda et al., 2021 (International Journal of Dermatology). A meta-analysis of 19 randomised trials with 1,125 participants aged 20–70 found favourable results for hydrolysed collagen versus placebo on skin hydration and elasticity, with around 90 days of use. (study link)
Two things stand out: the doses were in grams, not milligrams, and the timeframe was months, not days. (How long collagen takes, week by week.)
Why the dose on the label matters
Many products add a few hundred milligrams of collagen so the word can appear on the pack, or hide the amount inside a proprietary blend. Neither lets you compare against the 2.5–10 g range the trials used. Before you buy any collagen, check two numbers: grams of collagen peptides per serving, and how many servings you get. (Our 6-point checklist.)
Where epigenetic nutrition fits
Epigenetics is the study of how factors such as nutrition, sleep and stress influence which of your genes are switched on or off, without changing the genes themselves. At NEXXGENE we use "epigenetic nutrition" as a principle: what you do every day shapes how your body works, so nutrients should be given consistently and at doses the research actually used.
It is not a claim that a sachet rewrites your genes. No collagen supplement, including ours, has been shown to do that. (What epigenetic nutrition does and does not mean.)
Where Super Glow fits
NEXXGENE Super Glow provides 5,000 mg of hydrolysed marine collagen peptides per sachet, inside the studied range, with 200 mg hyaluronic acid, 100 mg trans-resveratrol, 4 mg astaxanthin, 5 billion CFU probiotics, and ashwagandha, turmeric, vitamin C and L-glutamine. Every dose is printed on the carton, with no proprietary blend.
Take one sachet a day in 250–300 ml of cold water, check in at day 28, and judge it at 8–12 weeks. Alphonso mango flavour. Contains fish.
This article is for general information and is not medical advice. Super Glow is not intended to diagnose, treat, cure or prevent any disease. If you are pregnant, breastfeeding, under 18, taking medication or have a medical condition, speak to your doctor before starting any supplement. Individual results vary.
