Ingredient guide
Hydroxypropyl tetrahydropyrantriol (Pro-Xylane)
INCI name · hydroxypropyl tetrahydropyrantriol
In short
Hydroxypropyl tetrahydropyrantriol (Pro‑Xylane) is a patented L’Oréal ingredient that supports skin density, hydration, and the feel of firmness. It encourages the production of skin‑supporting sugars and structural proteins. Clinical data from the developer shows visible improvements in skin smoothness and plumpness.
What it is
Xylose-derived C-glycoside developed by L'Oréal Research; acts as a glycosaminoglycan (GAG) booster by stimulating the synthesis of type VII collagen and proteoglycans in the dermo-epidermal junction, particularly fibronectin and chondroitin sulphate; strengthens the structural anchorage between the dermis and epidermis; clinical results published by L'Oréal show statistically significant improvements in skin density and firmness versus placebo in a 4-month double-blind study; water-soluble and formulated at 0.1–1% in most commercially available products.
Evidence receipt
No linked study yet
No verified study is linked to this exact ingredient and route. The guidance below describes conventional use; it is not evidence of efficacy.
Where it sits
Serums sit after toner and before moisturiser. Thinnest to thickest, water before oil.
- Cleanse
- Tone
- Hydroxypropyl tetrahydropyrantriol
- Moisturise
- SPF
Also found as
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Common questions
What does Pro‑Xylane do for skin?
It helps reinforce the skin’s support structure for a smoother, more resilient look and improves hydration.
Who is Pro‑Xylane for?
It suits anyone noticing reduced firmness or dryness and is generally well tolerated across skin types.
How is Pro‑Xylane used?
It is typically found in serums and creams from L’Oréal group brands and can be used in a daily routine with other hydrators.
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Personal guidance, not medical advice.