I own a ridiculous number of lipstick and skincare products, most of which are ridiculously expensive. The L'Oreal Perso is a device that promises to formulate perfectly customized lip tints and skin serums, and according to the demo I saw at CES, I'm sure this will save me hundreds of dollars.

Perso is essentially a soap dispenser, but instead of pushing the soap down, an internal motor pushes the contents of three cartridges upward; when Perso launches early next year, there will be two separate devices, one for skin care and one for lipstick. L'Oréal is also developing a model dedicated to foundation.

The corresponding app analyzes your face and comes up with a perfectly customized blend of products, including moisturizers, antioxidants, and active ingredients like retinol. The skin analysis takes into account not only the condition of your skin, such as pore size, fine lines, and dryness, but also the surrounding environment, such as UV intensity and humidity. Based on this information, the amounts of each product are adjusted and a magic potion is formulated at the top of the device. [Because instead of buying multiple products and layering them on top of each other, Perso delivers a perfectly blended cream that contains all the moisturizers and active ingredients you need. [Gib Baruch, global vice president of L'Oreal's technology incubator, said, "Much of what we mix in Perso cannot be found in a single product.

Mixing the ingredients at the point of delivery makes each more effective.

The lipstick version of Perso also has an app that analyzes skin tone and recommends shades, but you can also browse Instagram's most popular makeup looks to virtually try on trendy shades. I found a beautiful shade of bright red on one Instagrammer, and the app's preview looked like it would work with my skin tone, so I decided to give it a try.

Perso dispensed the red, pink, and coral, mixed them with the applicator, and applied them to my lips using the removable mirrored compact on top of the device.

The result was a beautiful peony red that applied smoothly and lasted well into the evening.

Perso does not yet have a price tag, but Barouch said the device will be "affordable to many."

"We don't see ourselves making a lot of money on this device," he added. We just want people to get excited and buy the cartridges."

"We want people to be excited and buy the cartridges.

Perso's cartridges will be comparable to products already available from L'Oreal and its brands, including affordable Maybelline and luxury lines like Lancome and SkinCeuticals. The price of the cartridges would be matched to the price of each brand's existing products, so that one would not pay an exorbitant amount for a Maybelline lipstick cartridge.

A personalized blend of Perso skincare and makeup would help me get rid of the lipstick tubes and bottles of creams and face oils that have taken over my bathroom like an invasive species. By far one of the best devices I've seen at CES.

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