Laikou California Vitamin C Serum 17ml17ml

Key Ingredients

• Important sourcing note -- no usable ingredient list found: MedEasy could not locate a full INCI ingredient list, ingredient names, or a disclosed Vitamin C form/concentration for this specific product from any source, including the brand's own official product page. The official listing describes only "high-activity small-molecule Vitamin C extract" in marketing language, without naming the actual compound or stating a percentage. A secondary ingredient-database aggregator exposed only a risk-score summary (categorizing ingredients as low/moderate/unknown risk) without revealing the actual ingredient names, so even that could not be used to build a real ingredient picture
• Vitamin C form and concentration: not disclosed by any source found. MedEasy cannot state what form of Vitamin C this product uses or at what concentration, despite "Vitamin C Serum" appearing in the product name
• "California" naming -- unsubstantiated origin/formulation claim: MedEasy found no evidence that this product is sourced, developed, or formulated in California. Laikou is a Chinese cosmetics brand (associated with Wesheda Co., Ltd, founded 2015); the brand's official "About" page describes manufacturing broadly without disclosing a specific factory location, and does not support a California connection. This follows an established pattern for this brand of using fictional-sounding regional names (e.g. "Japan Sakura," "Switzerland," "Australia") for product lines with no verified connection to those places -- Laikou's "Japan Sakura" line specifically received a US FDA warning in August 2021 as an "unauthorized cosmetic product" despite the brand not being Japanese. Given this history, MedEasy treats "California" in this product's name as unsubstantiated marketing rather than a factual origin or formulation claim

Key Features

• Manufactured under the Laikou brand, a Chinese cosmetics company
• Marketed as a Vitamin C serum with brightening and tightening claims, though no ingredient panel or concentration data supports these claims independently
• Given the significant sourcing gaps for this specific product, MedEasy recommends treating marketed efficacy claims conservatively

Benefits

• Marketed for brightening, tightening, and reducing the appearance of fine lines, per the brand's own description
• Because MedEasy could not verify the actual Vitamin C form, concentration, or supporting ingredient list, these benefit claims should be understood as brand marketing language rather than independently confirmed effects

Who Can Use This Product

• Adults interested in trying a Vitamin C serum from this brand, with the understanding that MedEasy's sourcing for this specific product has significant gaps (no verified ingredient list, no confirmed Vitamin C form or concentration)
• Those with sensitive skin or known ingredient allergies should be especially cautious given the lack of a disclosed ingredient list, and should patch-test carefully before regular use
• Not intended to replace medical treatment for diagnosed pigmentation conditions; consult a dermatologist for persistent or severe concerns

How to Use

• Apply a few drops to clean, dry skin after cleansing, before heavier creams or oils
• Gently pat or massage into the face and neck
• Can be used once or twice daily; introduce gradually and monitor skin's response, particularly given the lack of a disclosed ingredient list
• Follow with a moisturizer and, in the daytime, a broad-spectrum sunscreen

Storage & Safety

• Store in a cool, dry place away from direct sunlight
• Keep out of reach of children
• Because the ingredient list could not be verified, perform a careful patch test before first use
• Discontinue use and consult a doctor or dermatologist if irritation, redness, or an allergic reaction develops

FAQ (Frequently Asked Questions)

Q: What form and concentration of Vitamin C does this serum use?

A: MedEasy could not find this disclosed by any source, including the official brand page, which only uses general marketing language ("high-activity small-molecule Vitamin C extract") without naming the actual compound or a percentage.

Q: Is this product actually made in or formulated in California?

A: MedEasy found no evidence supporting a California connection. Laikou is a Chinese cosmetics brand, and this follows the brand's established pattern of using fictional-sounding regional names for product lines -- its "Japan Sakura" line, for example, received a US FDA warning in 2021 despite the brand not being Japanese.

Q: Is there a full ingredient list available for this product?

A: No, MedEasy could not locate a complete ingredient list from any source reviewed, including the official brand site and available retailer listings.

Q: Who manufactures this product?

A: It is manufactured under the Laikou brand, a Chinese cosmetics company.

Q: Should I be cautious using this product given the limited ingredient information?

A: Yes, MedEasy recommends a careful patch test before regular use, particularly for those with sensitive skin or known ingredient allergies, given the lack of a disclosed ingredient list.