Okay when you say blotchy skin - I am thinking patches of red spots....do you have skin dryness or any itching?
There are a couple of different "causes" and types of blotchy skin, which means there is a couple different ways to make it better.
The thing is, most women do get blotchy skin tone as they get older. If you don't have any other issues odds are you have Chloasma.
Some treatments for this type of skin discoloration include:
Balancing hormones through herbal therapy and discontinued use of oral or injected contraceptives
Application of broad-spectrum, reflectant-type sunscreen to the entire face such as SolBar, Vanicream and Blue Lizard sunscreens
Using mild facial soap or cleansers, avoiding exfoliating facial scrubs
Using bleaching creams such as the Obagi system
Seeking professional treatments such as chemical peels and prescription creams containing tretinoin and azelaic acid
As with any kind of skin or health care, it’s important to always check with a trained professional before using something that’s new to you. And if you have any other issues accompanying your blotchy skin, you really need professional treatment.