1. Primer oil
Primers certainly have their place but when I saw Smashbox unveil their Photo Finish Primer Oil and read the ingredients, I quickly realized it was nothing more than a facial oil. Now, don't get me wrong; I love facial oils and apply them nightly. However, applying a facial oil prior to foundation likely won't make your foundation last any longer, which is one of the key benefits of a primer itself. It could even add extra slip to oily skin types, achieving the opposite effect. I don't hate the idea of prepping skin with oil at all, but if you already own one you love, no need to buy a "primer oil" too!
More: How to match your facial oil to your skin type
2. Lip serum
When I first tried the Fresh Sugar Lip Serum, I had high hopes as I really enjoy the Fresh lip balms and many of their other products. However, when I read that this is a serum, best used under a balm, I had to sigh. A good lip balm should hydrate well enough on its own and I'm definitely not into spending an extra $36 for an extra layer under my lip balm. Many eye creams can actually be used around the lip area so a separate lip serum just seems unnecessary.
3. Dry conditioner
After dousing your hair with dry shampoo, if you're then adding dry conditioner, you may as well just wash your hair at this point. After adding a dry conditioner to your hair, you're left with hair full of product that's not any cleaner than when you started.
4. DD cream
Mother Mary, can we stop with the BB, CC, DD, etc.? They are all essentially tinted moisturizers with a bit more coverage and extra skin care benefits. If you've got a BB, you don't need a DD. I raise an eyebrow when a product promises everything and then some, so usually you're better off with a solid skin care routine and a great foundation or tinted moisturizer. Done and done.
5. Mascara primer
A mascara primer is adding an initial layer to your lashes to plump and thicken them up. However, you could achieve that same effect simply by layering coats of mascara. The primer may have an extra conditioning ingredient or two, but the thickening effect is minimal.
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