High-tech beauty devices are all the rage right now, especially LED Red Light Therapy Masks. These multitasking tools are known for their ability to treat various skin concerns, including minimizing fine lineswrinkles, dark spots, psoriasis and acne. Although they are now a mainstay of at-home skincare regimens, these devices were once only available in dermatologists’ offices. Which means… they are still quite expensive. If the high price is keeping you from purchasing a red light device, you’re in luck. Solawave Black Friday Sale it’s: buy one, get one free: it’s the best deal of the year!

That’s right: Through December 2, Solawave is offering BOGO deals on its red light therapy kits, so you can mix and match any tools you want for half the price. Choose between celebrity favorites 4 in 1 treatment wandTHE Pro Eye Recovery Mask which focuses on crow’s feet, Rejuvenating mask for neck and chestand more. Plus, in addition to your mask of choice, each kit also includes a performance-enhancing skincare product to use in tandem with your device.

Before spending your hard-earned money on one of these masks, it’s important to know exactly how they work. Jodi LoGerfo, DNP, APRN, FNP-BC, DCNP of the Orentreich Medical Group in New York has the answers. “Red light therapy is thought to act on the mitochondria of our cells, the engine,” she already said Prevention. “This gives the body’s cells more energy, allowing other cells to function at maximum productivity. For skin, this includes skin restoration and repair which can help increase new cell growth and intensify the restoration process.

Solawave Neck and Chest Rejuvenation Kit

Personally, I use the Rejuvenating mask for neck and chest every evening for four months. I don’t always remember to extend my skincare routine to my neck and chest, so this is a simple way to give this neglected area a little more attention. Additionally, I noticed improvement of my neck lines caused by looking at my phone too often.

As with any other skincare product, consistency is key. LoGerfo already said Prevention that these at-home tools should be used three to five times a week for 10 to 20 minute sessions to achieve the best results. Conveniently, each of the Solawave devices works for 10 minutes and turns off automatically once the treatment is complete, so you don’t have to worry about setting an alarm.

We have to warn you though: this deal is growing, so some of the most popular items are already close to selling out. The sale runs through the holiday weekend, but we recommend grabbing the mask you’re interested in before it inevitably sells out. Once you add two kits to your cart, the promotion will be automatically applied and you will be one step closer to smoother, more radiant skin.

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Mary Honkus is a freelance writer covering beauty, home, fashion, health, and wellness (just call her a jack of all trades!). She has held positions on the staff of Very simple, popular and InStyle, and his bylines can be found in many other publications. When she’s not testing the latest and greatest products, she can be found relaxing on the rooftop of her Hell’s Kitchen, checking out New York’s hottest new restaurants, or recording her podcast Good Trouble NYC. Follow her on Instagram.