If you ask about wefts, even the best Aliexpress hair products with great reviews are just alright. The threading may start to come out after a few days of using. This is due to wear and tear and basic bad stitching. Within a week, the hair starts piercing through and there are no ways to conceal them. If the hair is chemically treated to a large extent, there are chances that your scalp might start itching as well, especially when worn for long periods of time. So like we advised above, you will really need to vet through the review section to see if the hair products have such an issue.