Products given this classification are considered the best alternative to other main stream - synthetic - products that you may like a natural alternative to.
These products contain mostly natural ingredients but In order to work effectively, they also need to contain some ingredients that are synthetic.
The synthetic ingredients are used because there are no natural ingredients that will produce the same results.
Examples of these sorts of products are sunscreens, hair dyes, cosmetics e.g. lipsticks, nail varnish etc.