The provided source material details a specific free sample offer for a hair-thickening product, Caboki, which is available through a dedicated website and via Amazon. The offer is structured as a promotional trial for new customers, designed to allow users to experience the product's benefits without an initial purchase commitment. The sample is not entirely without cost, as a shipping and handling fee applies, and it is geographically restricted to the United States. The product itself is described as a plant-based, natural hair fibre powder that instantly creates the appearance of thicker hair by adhering to existing strands. The sources provide details on the product's application, claimed benefits, and user feedback, but offer limited information on the broader UK market context for such free sample programmes.
The Caboki sample offer is presented as a limited-time promotion exclusively for new customers. According to the brand's website, the sample is provided with "no obligations whatsoever," and the company explicitly states there are "no tricksy fine print, no subscription and nothing to cancel." The primary condition is a strict one-sample-per-household policy, with repeated violations potentially leading to a ban. The sample is substantial, intended to last for approximately 10 to 15 days depending on the size of the thinning area. While the product itself is free, the customer is responsible for a shipping and handling fee of $3.99. Crucially, this offer is restricted to U.S. residents only, as stated on the brand's site: "Sample is free, just pay the shipping and handling for $3.99 (three dollars and 99 cents, U.S. residents only)."
The product, Caboki, is marketed as a solution for individuals with thinning hair, not as a cure for hair loss. The brand clarifies that it does not grow hair and is ineffective on a completely bald scalp. Its function is cosmetic: to make existing hair appear at least ten times fuller, thereby eliminating the visual appearance of bald spots, widening hair parts, or sparse hairlines. The product is made from 100% natural plant fibres in powder form and is free from synthetic dyes, fillers, preservatives, and animal-derived ingredients. Application is straightforward: the user shakes the powder onto the thinning area and gently pats it down. The fibres are designed to bond securely to hair, offering resistance to wind, rain, and perspiration without staining skin or clothing. The brand emphasises that the product is "totally undetectable" due to its unique optical properties that match human hair, ensuring a natural look even under close inspection or bright sunlight.
Beyond the official brand description, the Amazon listing for the Caboki sample size provides additional context and user-generated feedback. The product is available in a wide range of colours, including Light Auburn, Black, Blonde, Dark Brown, Dark Gray, Golden Blonde, Gray, Light Brown, Medium Brown, Natural Blonde, Salt & Pepper (Dark and Light), and White. The Amazon page features customer reviews that highlight the product's effectiveness for both covering thinning areas and grey hair. One verified purchaser from October 2025 noted that the product works "great for balding or to cover gray," and appreciated that the sample size was inexpensive for testing colour matches. Another review from November 2025 stated that the product "immediately started to blend in, color was perfect match, and subtly covered the bald spot and thinning areas." These reviews, while positive, are specific to the Amazon product listing and do not address the separate free sample programme on the Caboki website.
The source material does not provide information on the availability of this specific sample offer in the United Kingdom. The shipping fee is quoted in U.S. dollars, and the offer is explicitly limited to U.S. residents. There is no mention of a UK-specific version of this free sample programme, nor are there details on UK shipping costs, value-added tax implications, or UK-based customer service contacts. The Amazon listing is hosted on Amazon.com (the U.S. site), and the product details do not indicate availability on Amazon.co.uk or through UK-based retailers. Consequently, while the product concept and sample strategy are described, the practical application for a UK consumer seeking a free sample is not covered in the provided data.
The sources for this information are the official Caboki website page detailing the free sample offer and the Amazon.com product listing for the Caboki sample size. The brand's website is the authoritative source for the offer's terms, conditions, and policy. The Amazon listing serves as a supplementary source for product details, colour options, and unverified user experiences. No other sources, such as third-party deal sites or forums, were provided in the context documents.
Conclusion
The Caboki free sample offer is a targeted promotional trial for new customers in the United States, providing a multi-day supply of the hair-thickening fibre powder for a nominal shipping fee. The product is positioned as a cosmetic solution for instant visual improvement in hair density, made from natural plant fibres and available in numerous shades. While the source material thoroughly explains the offer mechanics, product benefits, and application method, it does not contain information relevant to UK consumers. The offer is geographically restricted, and no UK-specific equivalent or distribution channel is mentioned. Therefore, the provided data is sufficient to describe the programme in detail but insufficient to guide a UK-based consumer on how to access a similar free sample.