If my serum shelf were the periodic table, this Molecule would be Gold

I’ve tested more than 200 serums, and somehow, the $5 bottle sitting on my bathroom shelf is the one I keep reaching for.Good Molecules has become my go-to drugstore skincare brand, and this serum is a big reason why.The formula is simple: it uses hyaluronic acid to help draw moisture into the skin, along with glycerin and propanediol.

It’s also fragrance-free, vegan and cruelty-free.The first thing I noticed about its Hyaluronic Acid Serum was the texture.It’s lightweight, spreads easily and doesn’t leave my skin feeling covered in a thick layer of product.

After applying it, my skin feels softer and more hydrated without the sticky finish I’ve experienced with some other hyaluronic acid serums.That matters because I don’t want a hydration step that fights with everything else in my routine.I want to put it on, let it absorb, add moisturizer and move on.

Good Molecules makes that easy.The price is another reason this bottle stands out.I’ve tried luxury serums that cost dramatically more, and I don’t see enough of a difference in everyday hydration to justify spending that much.

Drunk Elephant’s C-Firma Fresh Day Serum, for example, costs $79, while Good Molecules is only $5.Not to mention, it’s one of the best early Prime Day beauty deals I found before Amazon’s event kicks off on Oct.6.I also prefer Good Molecules when I want a straightforward hydration serum.

Unlike Drunk Elephant’s orange-toned vitamin C serum, Good Molecules’ hyaluronic acid serum focuses on hydration without leaving that kind of colored residue on the skin.After testing more than 200 serums, I’ve learned that a higher price tag doesn’t automatically mean better skin.Good Molecules leaves my skin feeling plump, soft and genuinely hydrated without making it feel greasy or weighed down.

I notice the difference most when I use it consistently: my skin feels smoother, looks fresher and has that comfortable, moisturized feeling I’m always chasing from a serum.At...