A peptide is a short chain of amino acids. A copper peptide is a peptide complexed with copper. GHK-Cu refers to the copper complex of glycyl-L-histidyl-L-lysine. Blue Hour’s carton lists Copper Tripeptide-1.
An ingredient name is not a product result
Copper peptides have been studied in different laboratory and topical contexts. Results from an ingredient, a laboratory model or another formula cannot be treated as proof of what a finished Blue Hour bottle will do on human skin.
Blue color is not a purity test or a measurement of concentration. Read the full ingredient list, the directions and the evidence attached to the exact product.
How to read a percentage claim
The supplier declares 1% Copper Tripeptide-1. This is a supplier declaration, not independent verification of pure GHK-Cu in a finished Blue Hour batch. A percentage alone does not establish how a product will perform.
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