It's no wonder this must-have, on-sale peptide powder line is Jennifer Aniston 's go-to brand. It upgrades your morning coffee or smoothie while giving your hair, skin, and nails a beauty boost.

"It's something I've used every day for a long, long time," Jennifer told E! about Vital Proteins Collagen Peptides powder . "I believe in it and I love it. I've seen the results of it, I've turned people on to it, so it felt very organic," she shared.

Right now, you can score the celeb-approved collagen powder—and more from the Vital Proteins line—for up to 40% off during Amazon's October Prime Day.

The brand's limited-edition Pumpkin Spice flavor is the best Vital Proteins deal you'll find today, and just in time for peak pumpkin spice season .

Of course, you'll also find the br

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