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I've Been A Cosmetic Chemist For 20+ Years & I Would *Never* Do This To My Skin

Jamie Schneider
Author:
November 10, 2022
Jamie Schneider
Senior Beauty & Lifestyle Editor
By Jamie Schneider
Senior Beauty & Lifestyle Editor
Jamie Schneider is the Senior Beauty Editor at mindbodygreen. She has a B.A. in Organizational Studies and English from the University of Michigan, and her work has appeared in Coveteur, The Chill Times, and Wyld Skincare.
woman applying skin care
Image by Jacob Lund / iStock
November 10, 2022
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Every beauty professional has their nonnegotiable steps. In our series Like a Pro, we tap experts for the top three techniques they absolutely swear by. Here, you'll hear from a variety of industry insiders on the fail-safe tricks they always keep in their back pockets. We're all about simplifying your beauty regimen wherever you can, and sometimes the best routines are as easy as 1, 2, 3.

As beauty shoppers continue to demand ingredient transparency, more and more brands deliver: Now, you no longer have to have a degree in chemistry just to read a standard INCI list. But that doesn't make chatting with cosmetic chemists any less exciting—as a self-proclaimed ingredient fanatic, I personally find it fascinating to nerd out on all the up-and-coming science, technologies, and industry trends. (I'm not alone: A quick search on TikTok, and you'll find a smattering of lab-coat-clad individuals whipping up new potions, with 88 million views and counting.)

So when cosmetic chemist Ron Robinson of BeautyStat.com recently spilled his must-have tips and absolute no-go's, I was certainly all ears. Below, find the three habits Robinson would *never* do after working in skin care for over 20 years:

1.

Cocktailing.

"Cocktailing is the layering of active ingredients one on top of the next," says Robinson. When it comes to smart skin care, more is not necessarily better—in fact, layering active on top of active can do way more harm than good in the long run. Not only can introducing multiple layers at once (glycolic acid, lactic acid, vitamin C, retinoids, etc.) lead to irritation, but it may even render them all ineffective. Not to mention, "layering too many active ingredients, like acids and retinoids, can damage your skin's moisture barrier," says Robinson, which can make your skin more prone to inflammation, dryness, and accelerated aging.

If you need a little help doling out your actives, you may want to opt for a skin cycling routine, which includes a simple step-by-step process to avoid overwhelming your skin barrier with acids, scrubs, and peels (because we've all been there). 

2.

Ignoring the glow-getters. 

That being said, Robinson champions a simple, no-fuss routine. He recommends opting for beloved tried-and-true ingredients like vitamin C and lactic acid (use vitamin C in the a.m. and the AHA in the evening), but if you're looking for a relatively buzzy player to add to the rotation, he also praises N-acetylglucosamine (NAG), "a natural skin exfoliant [that] works to improve the skin's own exfoliation action leaving skin fresher and brighter."

In addition to those exfoliating capabilities, studies have shown that topically applying NAG can help fade hyperpigmentation1, as well as increase skin firmness and elasticity2. It's why Robinson included both lactic acid and NAG in his Universal Triple Action Daily Peel to simultaneously dissolve dead skin and smooth fine lines.

3.

Using expired products. 

Look, knowing when to toss your skin care can be tricky, especially if you have a pricey cream or serum you absolutely adore and just can't bear to part ways. But take it from Robinson: You do not want to be slathering on rancid skin care. While each product may have its own must-toss date (usually a number followed by the letter "M," meaning the number of months), he advises against using formulas more than a year old, across the board.

"I would never use a product that was older than one year old, especially if it's packaged in a jar (jars can easily become contaminated if left unopened or unwashed fingers dipping in) and/or meant to be used around the eye area," he explains, since the eye area is one of the most sensitive regions on your face.

Even if your product technically has an expiration date longer than a year, you might want to double-check for signs it's gone bad; some products can expire earlier than that aforementioned must-toss date depending on how you store them (say, if you leave the cap slightly opened or place the bottle in a hot, sunny area). 

The takeaway. 

After working as a cosmetic chemist for over 20 years, Robinson certainly has his beauty philosophy down to a science. A summary? Simplicity is key, and don't be afraid to toss a year-old formula—even if parting with the bottle breaks your heart a tiny bit.

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