YSL Beauty Australia provides information about the ingredients used in their products on their website. They have 9 ingredient families that they use in their products, but specific details about each products ingredients are not provided on their website.
As for positive and negative aspects of YSL Beauty Australia products, this information is not readily available in the search results.
Regarding materials, the Sustainability Progress Report 2022 by YSL Beautys parent company, LOreal, mentions their efforts to create eco-responsible ingredient sourcing systems. However, specific information about the materials used in YSL Beauty Australia products is not provided in the search results.
It is important to note that cosmetics and skincare products may contain ingredients that could cause concerns, and some may be harmful if absorbed through the skin. The FDA in the United States regulates cosmetics and defines them as products "intended to be applied to the human body for cleansing, beautifying, promoting attractiveness, or altering the appearance without affecting the bodys structure or functions".