Is it possible for a minor to purchase salvia divinorum in a smoke shop in WA state by themself?

Because Salvia divinorum products are unregulated in WA, there is no legal reason shop owners cannot sell salvia products to minors. However, due to pressure from the community and other such factors, some shop owners may restrict the sale of salvia products to those over 18. Therefore, whether or not a minor would be able to purchase the products depends on the particular shop's policies.