I am currently advising a cosmetics and high fashion wear entrepreneur. My understanding of their data and demo shows that the buying decision - which is why you're in this game, right? - depends on two things: explanation and comparison.
In other terms, 'what is this?' and 'is it the best of it's kind?'.

With those being the asks, a responsive website would be best for 'closing sales' till you have a recognized brand.

Let's get on a call to figure out how to divide the utility of site and app to give customers the best overall experience, and for you, the most sales!

Best,
Arjun