Amazon's secret beauty sale includes top picks from RoC, L'oreal and more for 35% off

Lashes thin with age, but TikTokers seem to have found the fountain of youth in the form of mascara. This $10 tube has an incredible number of five-star ratings — over 76,000! Not only do they love it for its lengthening power, but they say it's just as good as designer brands.

"I was looking for a cheaper alternative for Benefit Roller Lash mascara, which was my fave until I tried this Maybelline Sky High mascara," wrote a beauty enthusiast. "It is just as good and more affordable. I originally bought these to be an everyday mascara and save my more expensive mascaras for going out but I seem to just stick to using the Sky High waterproof for my going-out looks as well."

Carrie Underwood loves this ultra-rich cream, formulated with nourishing natural ingredients like extracts from rosemary, chamomile and pansy in a base of sunflower and sweet almond oils. It's safe for use on any skin type and on any area of the body. No need for a facial moisturizer and a separate body lotion!

"I'm terrible at regimens and stuff like that," Underwood told Today. "Every once in a while, like once a year, I maybe get to go get a facial or consult somebody and I'm like, 'What is the least amount of things that I can do?'"

My absolute favorite skin care product, Differin's adapalene gel was the first prescription-strength retinoid to become available over the counter. It's also dermatologist-recommended and clinically proven to tighten and brighten skin while reducing the appearance of fine lines. This jumbo size rarely goes on sale — and it's currently a cool 32% off. 

"I've been a Differin user for over six years at this point, and I swear by it," wrote an in-the-know user. "Most things that work as well as Differin are prescription-only. It actually works in a similar manner that some of the prescription-strength treatments do: by increasing the rate at which your skin cells turn over."

Another RoC star product, this low-cost retinol eye cream helps smooth crow's feet and brighten dark circles while also reducing puffiness and remaining gentle enough for sensitive skin.

It's also among the most highly rated of all the eye creams, with more than 19,000 five-star Amazon reviews. It's dermatologist-recommended too. Right now is a good time to this effective cream a try — it's over 35% off.

For months, I kept seeing ads for this "it" cream from K-beauty brand Zen Dew, and beauty influencers across platforms could not seem to stop raving about its wrinkle-plumping, face-rejuvenating powers. However, I know from experience that just because a product works for a naturally dewy 25-year-old does not mean it will do squat for my own perimenopausal dermis. I decided to test it myself.

Well, it turns out that it's actually great. It's made with 91% snail mucin (always a skin care boon) and includes a variety of high-quality ingredients like ectoin, which is known for smoothing rough texture and azulene, which helps calm irritation. It's also cruelty-free, paraben-free and delivered in sustainable packaging — much appreciated in an industry that creates so much waste. 

But my favorite thing about this lightweight face cream is the results: My skin looked immediately glowy after using it, an effect that lasted the entire work day.

Bliss's tinted mineral sunscreen is an excellent option for those with sensitive skin or those who just don't love the idea of chemical sunscreens. The texture is smooth (not chalky) and it absorbs easily without being greasy or leaving behind a white cast. It's also packed with skin-nourishing antioxidants and it has a soothing (not overpowering) lavender scent. 

This is the cream you want if you're, like, "I think tightening creams are BS but I also want to believe they are true because I currently hate my neck." The Gold Bond firming cream is no frills but gets the job done (the job being tighter jowls and a less reptilian neck). The formula is lightweight and on the thin side but the product absorbs well and is gentle enough not to irritate sensitive skin. 

Note: You'll need to use it consistently for about a month to see results, and it won't, of course, magically make you appear 25, but at $12 for this ample size, this product is one of those that's worth a go.

If you're looking for all-over tightening, brightening, hydrating, complexion-smoothing night cream for face, neck and decolleté, you can't do much better than this clinically proven version by trusted brand RoC — especially at this price point. 

The popular cream is non-greasy and non-comedogenic and beloved by both dermatologists and celebrities alike (Sarah Jessica Parker is a fan). And, according to the more than 6,000 5-star reviews, ordinary folks are all over it, too: "I'm in my 70's and this cream has been my go-to for years. It works on my skin!"