Thank you everybody for all the great input and comments! I appreciate it a lot.
For the record, I absolutely believe DIY beauty with authentic herbal extracts, when done right, works. An ingredient might not work on someone who is allergic to that specific ingredient, of course, but that is true of synthetic ingredients too. Ayurveda is 3000 years old and has proven to work thousands of times when modern medicine failed.
Remember- scientific theories and facts get proven wrong all the time! It doesnt mean that we shouldn’t rely on science, it just means we should be open minded and respect technological advancements 
Thank you again for all the input!