What make the internet good? The accessibility of great information. What makes the internet bad? The accessibility of BAD information. Here are a list of my favorite skincare and cosmetic reference sources when looking for a new product. Of course, I don't limit myself to just these sites but these are ones I often rely on.
Cosdna- This site doesn't have the sexiest interface but it is absolute gold when it comes to skincare. What you do is type in the product you are interested in buying and what comes up is a list of the product's ingredients in order from highest concentration to lowest. Next to each ingredient is it's function in the product, an acne rating, irritation rating, and the ingredient's safety scale. The basis of most of the ratings are based on reports from the FDA (USA), RTECS (Canada), and other governmental resources. Of course, I am not sure how often this database is updated but it is always helpful especially if you have sensitive and acne-prone skin like I do.
Paula's Choice & Beautypedia- I use this site to look up articles on debunking different skincare myths and explaining a variety of different skin conditions. They also have their "beautypedia" page where they rate hundreds of products, both skincare and makeup, based on the product's claims, performance, pricing and so much more.
MakeupAlley- What beauty junkie hasn't used this trusty site? This website is a resource of anonymous product reviews where the user can find and filter reviews based on skin type, skin color, age, and more. What I really appreciate is that they have their own app available for both Android and iPhone which makes it ideal to research a product while you are in store.
Findation- This is a site where you put in a list of foundations and its shade that you know match you in order to find your perfect match in a different foundation. I always use this whether I am buying a foundation online or in a drugstore with no testers. I even use this before buying foundations in Sephora or makeup counter to help narrow my search. I often find that some sales associates do a poor job matching me to a foundation often making me look like the Pink Panther or Pikachu once I walk out of the store. This source helps me feel more confident that the shade a sales associate matches me to would actually work for me.
Cosmetic Calculator- Out of all the sources I have mentioned so far, this is the only site that is geared toward the post-purchase rather than the pre-purchase. While most products have a guideline when to toss them out based on the date it was opened, this website helps you calculate which products of yours may have expired based on its manufacturing date. This is a site I keep open whenever I need to clean out my makeup stash to see what definitely needs to be chucked.
What are your favorite websites to use to find product information?