I am quite interested to know how you got into the business of making software for hair salons when you're not a "domain expert in the beauty industry" - did you start out building this for someone else who was involved in this industry, and then decide to give it a go yourself?

There's some great advice in your post about your ill-fated Snip (strong name!) product, anyway!

(I'm not sure I agree about product businesses - I think it depends on the industry and your connexions - but certainly no one should think that going it alone will be easy.)