Distance/Correspondence

There is no age limit to most of the post graduate courses except very few institutes, technical, medical and management education.

You can do any kind of Diploma course, but you are not eligible for any Bachelor's degree, whether it is regular either correspondence.

http://www.vobium.com/in/s/courses/health-wellness-fitness/therapy/Learn-aromatherapy/Location-mh-mumbai
For Mumbai, best course you can visit the upper site.
https://www.aromahead.com/courses/online
And, this is the online course for aroma therapy

https://www.google.com/amp/s/www.shiksha.com/science/course/amp/m-sc-in-geography-directorate-of-distance-education-kurukshetra-university-37489
Hope this helps.

Fill in the admission form for distance education, and then follow the admission procedure.

Can you please tell me the university name you wish to take admission in?

Hello Varun, please don't keep on repeating your UG, you already did. Time to move on. Do a full time PG Diploma or MS and look for options abroad, because of your previous record, which is not so impressive, please study hard and pass with a good first class. Build your extracurricular too. Have clarity on what you want to do in future, career plans etc. You must prepare a good SOP and get some strong recommendation letters too. Check why your application was rejected earlier. Do some groundwork.

1) Symbiosis
2) Amity university
3) Manipal University
4) Narseenmunji.