Hello. Rsarbocca,
Welcome to Wealthy Affiliate!

Thank you for followingg And am happy to be in your. Network.
Now. That is a great question that needs answers.

Anti-aging is very hugh!
It. Can be narrowed down. By doing this I using Jaaxy to search for key words.
Key words. I gathered had a good score.
1. Anti-aging. And. psoriasis
2. Anti-aging a condition
3. Anti-aging a disease
4. Anti-aging. Reversed
5. Natural cure for. Aging skin
6. Anti-aging And botox
7. Anti-aging products
8. Care for aging skin

These are just a few keywords. The list goes on.

Hi Rita, please check my response on your profile page.

No. It's a very broad area. You need to be more specific than just anti-aging products. Focus on a type of person who's problems you can write about.

Eg If you have oily skin, try a site for anti aging treatments for people with oily skin.

Or if you know how younger women feel about getting wrinkles in their 30s then do a site on anti aging tips for 30something women

who is your targeted audience Men, women, both?
Also a good keyword research is important. In how to do it MaxDrijic already told you in how you can find out.

Check your niche by using Jaaxy, WA Keyword Tool or using Google Adwords. By using these programs, you will know more about the competition and searches of that specific niche. So I highly recommend you to try one of these programs or more. I hope this helps :)