Create a High end Brand Identity + Stationery - Details inside!!

Information for the business: Professional teeth whitening product
Industry: Healthcare
Design details: We are not just another "cheesy" teeth whitening product.

We want to appear as an authority and expert in our market.

Words that has to reflect our identity:
- Professional
- Experts
- Authority
- Transparant
- premium
- modern
- effective
- human

Looking for:
- Logo (one dimensional - simple - clean - crispy)
- Invoice design
- Letter head
- font style for our documents
- favicon
- All source files included for web and print + logo vector file to resize without losing quality
- (optional) Packaging design - (if you are able to create a simple packaging design (think pharmaceutical packaging design) than that is in your favor. If not, don't worry that is not a problem.)
I don't have the exact packaging dimensions but it will be around 17x20x2,8 cm. example: https://hugomiramontes.files.wordpress.com/2012/12/gentlemans_soap_box_2.png

Brand Colors : darkish blue - grey - (optional) white

I love to see these designs presented on a nice template

Target audience: Men and women between de age 18 and 65
Ideas for the visual style: one dimensional - simple - clean
Things to avoid: cheesy look (no teeth or smile symbols etc)
Where the design will be used: Print / Web / off- and online Advertising - Packaging
Extra notes: