Giving results ahead of time

Happy new year from Brussels
I am starting my second month in Scholars and i am currently working on my Go to Market Strategy for my skincare business.
Brooke said in the entrepreneurs videos that is crucial to give results ahead of time to our customers and i see how she does through her free podcasts and all the materials she so generously giove for free.
Now if i am creating a 360° solution that consists of the best natural and biomimetic skin care line for melanin rich skin, and supplements to promote beauty from within and educational material about skin in general and skins of colors in particular. How will i give results ahead of time since i can’t give products for free?
Many thanks for your help