If you've managed to resist all pre-Christmas sales this year, you may give in to these post-Christmas deals. Maybe there's still something on your wish list that hasn't been fulfilled. Well, now's your chance to snag major bargains or use that gift card. Here are some of the best beauty sales happening right now.

Sephora

If you're into Rihanna's Fenty Beauty, there's an extra 20 percent off on the Holo'Daze Collection which includes the four-piece Glossy Posse: Holo'Daze Edition Mini Gloss Bomb Collection, Full Snap Eyeshadow + Mini Mascara Set, Fenty Glow Trio Face, Lip and Body Set and Two Lil Stunnas Mini Longwear Fluid Lip Color Duo. For skincare staples, Kiehl's, Mario Badescu and Kate Somerville have awesome deals on cleansers, moisturizers, and facial mists. According to Glamour, another rare item that goes on sale is Pat McGrath Labs' Mini Opulust Lip Gloss Trio. For those transitioning to clean beauty products in 2021, you can start with Kosas Clean Volumizing Mascara and Hydrating Lip Set. Ladies who are missing the salon can perfect the perfect blowout at home with T3's Cura Professional Digital Ionic Hair Dryer which has slashed $100 off its original price tag. Teen Vogue adds that from December 27 to 31, you can enjoy an extra 20 percent off sitewide with the code BYE2020. Glamour also writes that you can use the code MAJORSALE.

Ulta

No codes necessary. For purchases above $70, you'll be getting a free 23-piece beauty bag.

Also read: The Top-Selling Beauty Products From Ulta Beauty In 2020

Bluemercury

Use the code GIFT20 for 20 percent off on purchases above $150. Bestsellers include dermatologist-favorites SKINCEUTICALS C E Ferulic, Dr. Barbara Strum Hyaluronic Serum, La Mer The Eye Concetrate, Augustinus Bader The Rich Cream and M-61 Powerglow Peel. Other notable brands on this beauty site are Hourglass, Bobbi Brown, Oribe, MORROCANOIL, Laura Mercier and Lune + Aster.

Dermstore

For dermatologist-approved skincare products, check out Dermstore's sale items at 30 percent off on brands like Murad, Naturopathica and Slip. Slip, by the way, is known for their slik pillowcases. Skin experts will tell you that silk pillowcases absorb less oil and moisture to save you from breakouts, and hair experts will tell curly-haired folks that sleeping on a silk pillowcase will save your hair from friction and tangles. Use the code EXTRA10 for an extra 10 percent off on participating products.

Kiehl's

Khiel's is keeping it short and sweet: take 20 percent off everything, including sets that you can reserve for birthday gifting.

Herbivore Botanicals

For natural and cruelty skincare, head on to Herbivore Botanicals. With the code HELLO2021, you can take 21 percent off the whole website from now until January 1, 2021. One of their top sellers is their Bakuchiol Smoothing Serum, a highly recommended retinol alternative. Get it before it gets sold out again.

Tarte

Tarte is having a major after-Christmas sale offering up to 70 percent off on new markdowns and using the code SALE will give you another 20 percent off your total bill.

Related article: Bakuchiol: The Gentler Alternative to Retinol