The Celestrial Seasonings webpage is colourful and includes a series of short informational videos and easy to navigate catagories of their types of tea, including Holiday teas (which I am extremely faithful to, personally). I recommend this website to curious folk such as myself. It includes "frequently asked questions" at the bottom of the main page. These questions involve mainly the health of tea in general, whether it is Celestrial Seasonings or not. Some frequently asked questions are...
How much caffeine does an average cup of each kind of tea contain?
And the answer paraphased was: Black Tea approx. 60mg
White Tea approx. 50mg
Green Tea approx. 36mg
Herbal, (this is a good soothing nighttime drink), usually none
This is compared to Drip Coffee: approx. 90mg and Regular Cola: approx. 45mg

Another question was: What does "natural flavors and ingredients" mean? This, I think is an important question to a lot of people.
The answer paraphased was that a tea drink with "natural flavors and ingredients" can include concentrated substances of the fruits, herbs, spices, petals stored in the factories but does not include MSGs. This was the information provided on the brand's website. For the most part I think that the information provided here concerns any tea drink in general. Whether or not you want to believe this information is up to you.