“Collagen look” is a marketing phrase, not a measurement of collagen. A claim about plumper-looking skin still needs evidence appropriate to the finished product and the result being promised.
What is established for Blue Hour
Blue Hour contains glycerin and sodium hyaluronate, humectants used to help skin retain moisture. Its carton also lists Copper Tripeptide-1. These ingredients do not establish that the finished serum changes collagen or delivers firmer skin by morning.
Ingredient studies and product studies
A laboratory study or a review about GHK-Cu can help explain why an ingredient is researched. It does not substitute for a human trial of Blue Hour. No verified human efficacy study was identified for Blue Hour establishing collagen changes, overnight effects or a specific timeline.
What we do not promise
We do not promise collagen stimulation, rebuilding, medical treatment or equivalence to retinol. Individual experiences with cosmetic skincare vary.
Blue Hour formula and directions
Blue Hour is a 30 ml / 1 fl oz pump serum priced at $30 USD. Its labeled ingredients include Copper Tripeptide-1, glycerin, sodium hyaluronate, niacinamide, Bifida Ferment Filtrate and Centella Asiatica Extract.
Apply 1–2 pumps to a freshly cleansed, slightly damp face and neck. Let it absorb, then follow with moisturizer. If using during the day, follow with sunscreen before makeup.
Do not layer in the same routine with direct vitamin C (L-ascorbic acid) or AHA/BHA exfoliating acids. For external use only. Avoid contact with eyes; rinse with water if contact occurs. Stop use if irritation or redness persists. Keep out of reach of children.
Made in China by Guangzhou Baiyanhui Cosmetics Co., Ltd. Distributed by Mora Lora LLC for Only Child.
The formula contains no added fragrance, essential oils or retinol. This does not establish guaranteed gentleness or suitability for every skin type. Patch test before first use. Ingredient research is not a finished-product study; Blue Hour has no verified human efficacy or sensitive-skin study establishing specific results or timelines.
Full Blue Hour ingredients and product details · Contact Only Child