How to gain users for a hair fall and maternity products based startup?

So, recently I was studying a case study about product growth and acquiring customers.
Here is the statement:

A new startup is currently focusing on Hairfall products and maternity products, and targeting the well-earning population of Tier-1 and Tier-2 cities in the developing countries.

Here is the problem:

1. How do they increase sales for the hair fall product in large numbers without spending too much on acquiring customers? Right now the startup is doing sales through salons and content marketing on their blog.

2. Expecting mothers spend about 1,322.24 $ on maternity products on average. Can the startup launch any product to get a slice of that pie?

Do you think there is a solution the startup should try?