Martha Stewart is looking fabulous at 84. To be honest, the woman has looked fabulous for decades. Thankfully she’s not shy at letting everyone in on her top skincare secrets. The lifestyle guru has said she swears by Mario Badescu’s youth-boosting clay mask, which just happens to cost mere pennies thanks to it having 30% off. That's the sort of A-list beauty we like to buy. Martha is a big fan of the brand, so it tracks that she loves the collagen-infused face mask. AT A GLANCE

Martha Stewart, 84, shares her favorite beauty products frequently.

One of her go-tos is on sale for just $14.

Martha listed the Mario Badescu Super Collagen Mask as one of her top products.

Revealing her skincare heroes to the editors at MarthaStewart.com, Martha's list of must-have beauty includes 15 pr

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