While I think the design concept is strong, there are 2 main issues that you need to think about:
1. Scalability
I think you should mock-up the page in HTML to see how it works on a smaller laptop, mobile device etc.
While the concept looks great on a iMac 27" screen, I feel you might have to re-design to accommodate a smaller screen area.
2. Search Engines Optimization
Your layout has limited options for HTML text (and therefore you have very few keywords).
Ideally you should be looking to incorporate roughly 150 unique words to your page (these need to be HTML text and not text embedded in images). Within the 150 words, you can then add your keywords (but don't overdue it).
How to Build a Website with SEO in Mind | SEO.com
The only other thing I would add is that there isn't any call to action on your home page.
If you want to increase visitor response on your website then you should give them a reason to do something and connect with you. ie. Sign-up for 10% discount vouchers, book an appointment, view this season's latest hair trends etc.