A percentage claim is useful only when you know what it measures. It may refer to a named active ingredient, a supplied blend or a raw material added to a formula. Those are different statements.
Blue Hour’s supplier declaration
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.
A supplier assay reporting copper peptide is not enough, by itself, to establish an independently verified pure 1% GHK-Cu concentration in a finished Blue Hour bottle. The exact analyte identity, assay basis and link to the finished batch need to be resolved before making that claim.
Useful questions about a percentage
- What named ingredient or mixture does the percentage describe?
- What assay method and analyte does a test report use?
- Is the report linked to the exact finished-product batch?
- Does the brand have a human study of this finished product supporting the result being advertised?
More is not proof of a better result
The complete formula, directions and product evidence matter. A concentration declaration alone does not establish performance or tolerance, and color cannot verify a percentage.
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