I Test Products For Work, and These Are the 9 Best Skincare Items I've Bought on Amazon

This TruSkin Naturals Vitamin C Serum ($20) is a bestseller on Amazon and grows in popularity with each day — it's currently up 120 percent in sales. According to the brand, the serum is "proven to reduce the appearance of wrinkles and fine lines while helping boost collagen, fade sun and age spots, improve skin firming, brightening, and tone for a smoother, fresher, more revitalized youthful complexion." I know it sounds too good to be true, but it actually works.

Vitamin C is a necessary supplement when it comes to skin health, so it's no surprise that this serum works so well. If you're not convinced yet, check out the reviews on Amazon. There are all sorts of before-and-after photos that prove the effectiveness of this formula.

For years I have dealt with annoying dark circles and puffiness under my eyes. That's why I was excited to hear about Baebody Eye Gel ($25). It's currently exploding in sales on Amazon by 9,000 percent, and for good reason. It claims to drastically reduce the appearance of dark circles, puffiness, sagging, or wrinkles. Customers are absolutely loving it and many are posting photos of their results.

Almost 10,000 people have reviewed the eye gel, and 67 percent of them give it five stars. The ingredients include hyaluronic acid, which hydrates and plumps skin; Matrixyl 3000, which firms skin; and plant stem cells to strengthen and protect against damage.

I like using a toner after washing my face — it keeps my skin even and blemish-free. The one problem I have found, though, is that most toners include alcohol, which can be extremely drying in the wintertime. I would end up with unwanted flakes that were anything but cute. That's why I was thrilled to discover Thayers Rose Petal Witch Hazel Toner ($8). The alcohol-free formula is a bestseller at Amazon; it keeps my skin clear without stripping it of moisture.

The product has more than 10,000 reviews, and a whopping 81 percent of customers give it five stars. People claim that it helps with a multitude of problems, including acne, dark spots, the appearance of pores, and hydration. The soothing toner includes rose-petal water, vitamin E, and witch hazel extract.

The tannins in witch hazel extract act as a natural astringent, so they remove excess oil from skin without depleting skin of moisture. The rose water also helps to quench your face — plus, it smells amazing. Basically, this liquid is pure magic.

More than 1,800 customers have reviewed this Vassoul Blackhead Remover Mask ($15), and 85 percent of them give it a perfect five stars.

"I just used it once and the results are seen immediately," a reviewer said. "This pull-off mask really works. I can see all the blackheads pulled off. After using it my face feels clean and smooth."

I will say you have to have tough skin (literally) to use this mask — it is really intense and deeply penetrates your pores. I use it on little patches of my skin like my nose or chin for pesky black heads. The results leave my face incredibly clear for days.

When I have an annoying zit, it's so hard to resist popping it. Using your fingers increases your risk of scarring, so you have to be careful! That's what I was beyond excited to find this Bestope Blackhead Remover Pimple Comedone Extractor Tool Kit ($8) that's going viral on Amazon.

The kit includes a case and five two-sided tools. The tools have a stainless steel antibacterial coating that lowers the chance of sensitivity issues and minimizes risk of infection. The key with this kit is to use it safely and properly. "Correct usage makes things easy, we don't suggest using any blackhead remover before the acne matured, and please wipe all tools with rubbing alcohol before and after each use," the manufacturer states in the product description.

The tools work for blackheads, whiteheads, and any other pesky zits you're dealing with. Most of them have circular tips that you simply press up against your skin to make the pimple pop. There is also a needle-tipped option for puncturing acne. Again, clean the tools with rubbing alcohol both before and after you use them — sanitation is important.

This Neutrogena Hydro Boost Hyaluronic Acid Hydrating Water Face Gel ($15) is the bestselling moisturizer on Amazon. The hyaluronic acid in this formula acts as a sponge for dry skin and can absorb up to 1,000 times its weight in water. More than 1,700 customers have reviewed this product, and 70 percent of them give it a perfect five stars.

Suddenly, as I entered my mid-20s, pesky zits started showing up on my cheeks and chin. I tried all sorts of products, including expensive creams, toners, and scrubs. It wasn't until I tried my sister's drugstore pick that I discovered the answer to my problem. Clearasil Stubborn Acne Control 5-in-1 Daily Facial Cleansing Pads ($8) sit on my vanity now, and I use them religiously every night.

These little circular pads contain 1.9 percent salicylic acid, which unclogs pores and dissolves the unwanted gunk you're dealing with. I use one every single night after I wash my face. All I do is wipe the pad over my problem areas and let it dry for a few minutes before I lay down or touch my face. My skin never gets too dried out or itchy from this formula, which is something I have struggled with in the past.

Clearasil promises that this miracle product will reduce excess oil and shine, unblock pores, even out your skin tone, remove dirt, and exfoliate for smoothness. I can tell you that it does all that and more. Not only do my pimples clear up rapidly, but my skin is also firmer and glowing.

Why haven't we thought of this? The Remedy Roll-a-Lotion Applicator ($17) allows you to easily reach your back when applying lotion.

"Love that the lotion comes out light and not extra thick," a reviewer wrote. "I like the fact that it comes with a cover so it won't dry out. But I love more than anything that I don't have to beg anyone to lotion my back."

Aztec Secret Indian Healing Clay ($11) has a tried-and-true formula that has worked for countless people with acne-prone skin. The mask is made with 100 percent natural calcium bentonite, which is a green clay that's incredibly absorbent. More than 15,000 customers have reviewed the product, and 70 percent of users give it five stars. That's a pretty spectacular reputation.

I tried the mask myself and was very pleased with the results. When you open the jar, you will find a powdered clay that you mix with equal parts apple cider vinegar or water — it's up to you. Many customers claim that the vinegar will give you more effective results. You stir until you get a thick yet smooth paste that you can put on your face with your fingers or a brush. Allow the mask to dry. Here's the important part: if you have sensitive skin, only leave it on for five minutes. Any longer and you may experience irritation. If you have normal skin, you can leave it on for 15 to 20 minutes. As it dries, you will feel your skin tightening — that's a good thing. Wash it off with warm water once you're finished. You may look a little red after you take the mask off, but that should go away in 15 minutes or so.

I used the mask three times in one week, and I didn't get a single zit. My skin felt baby soft, and it was the clearest it had been in months. Many fans of the product claim that it has been a miracle worker for their severe acne.