Final answer:
Used hair goods must be cleaned according to manufacturer instructions before resale to ensure hygiene and comply with health regulations, and must be marked to indicate they are not new.
Step-by-step explanation:
According to the guidelines, all used hair goods must be cleaned following the manufacturer's instructions prior to resale. This ensures the removal of any residues, both from previous use and any chemicals. It is essential to adhere to the given guidelines not only for hygiene purposes but also in compliance with health regulations. This practice is crucial in industries where used hair goods, such as wigs, extensions, or other hair accessories, are resold.
The cleanliness is imperative to prevent the transmission of scalp conditions or infections. Additionally, these items must be clearly marked to inform potential buyers that the product is not new, hence maintaining transparency and consumer trust. Hair care products like specialty shampoos, which cater to various needs such as for dandruff, color-treated hair, or even formulations for infants, often have specific cleaning requirements to maintain their intended purpose and quality.