When we think of skincare, most of us picture serums, creams, and facials. But new science highlights a different approach: radiant, hydrated skin may actually begin in the gut.
A recent clinical trial found that Partially Hydrolysed Guar Gum (PHGG) — a gentle, plant-based prebiotic fibre — can improve hydration, elasticity, and skin barrier strength when consumed daily.¹
The Study in Focus
Over 12 weeks, 70 participants consumed either 5g of PHGG daily or a placebo. Results showed:
-
Deeper hydration — skin retained more moisture, even in dry winter conditions.¹
-
Stronger barrier function — reduced trans-epidermal water loss (TEWL).¹
-
Improved elasticity — skin appeared smoother, supple, and more resilient.¹
-
Visible results — participants reported noticeable improvements with no side effects.¹
The takeaway: prebiotic fibre supported skin that looked and felt healthier — from the inside out.
Why Gut Health Matters for Beauty
Science now recognises the gut–skin axis — a direct link between gut balance and skin vitality.² When the gut microbiome is nourished, inflammation decreases, hydration improves, and the skin’s natural defences strengthen.
Prebiotics like PHGG feed beneficial bacteria, which produce short-chain fatty acids (SCFAs). These SCFAs help regulate hydration, elasticity, and barrier function — the foundations of glowing, confident skin.² ³
The Sun Ray® Approach
At Sun Ray®, we see beauty as more than surface-level care. That’s why we use clinically studied ingredients like PHGG to support gut balance and skin health — offering a holistic path to radiance your moisturiser alone can’t deliver.
Pure. Honest. Effective.
Supporting your microbiome may be the most overlooked step in your beauty routine. With science-backed prebiotics, you’re not just nourishing your gut — you’re creating the conditions for healthier, hydrated, luminous skin.
Because true radiance doesn’t just shine — it’s built with integrity.
References
-
Kapoor MP et al. J Clin Biochem Nutr. 2025;76(2):102–113. Clinical trial on PHGG and skin hydration/elasticity.
-
Salem I et al. Front Microbiol. 2018;9:1459. The gut–skin axis and its role in inflammation.
-
Petersen C, Round JL. Nat Rev Gastroenterol Hepatol. 2014;11(8):497–505. SCFAs and microbiome regulation.
Disclaimer
This article is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary. Always consult a qualified healthcare practitioner before making changes to your diet or supplement routine.
