The Secret Ingredient Was Already in Your Makeup
Your skin holds less water than it used to, and your base shows it
In your skin, hyaluronic acid's job is holding water. Water is what keeps skin flexible and comfortable rather than tight and papery. Not glowing, not youthful. Just skin with enough water in it to behave.
You make less of it as you get older, along with less collagen and elastin. That's a big part of why makeup that used to sit fine can suddenly cling to dry patches or crease somewhere it never used to. Same foundation, different skin underneath it. It's just skin doing what skin does.
Hyaluronic acid in a tube works at the surface
Hyaluronic acid applied to skin draws water into the top layers and holds it there, so those layers feel softer and your base has something to sit on instead of catching wherever the skin is driest.
That "holds 1000 times its weight in water" line is on everything.
That number describes how much water the molecule can bind, full stop. Not a claim about overnight miracles.
(On the ingredients list it's written as sodium hyaluronate. Same ingredient, in the form that stays stable in a formula. Worth knowing if you're one for reading the back of the tube.)

Water in the skin can only do so much
Hyaluronic acid isn't a filler. It plumps the surface, it doesn't rebuild what's underneath, and deep lines stay where they are.
It's a hydration ingredient, not a treatment. No undoing sun damage, no fading pigmentation, no sorting out breakouts.
Five BOOIE products already have hyaluronic acid in them
Nothing new to learn, and no extra steps. It's the same routine you'd do anyway, the products are just doing more while you've got them on.
- Squeaky Clean goes first. Melts off yesterday's makeup and leaves skin feeling hydrated rather than stripped. Preps a hydrated base before you put anything new on. (The name's a joke. The balm isn't.)
- Excellent BB Cream is your everyday base, with the hydration in the formula rather than promised on the front of the box.
- Bloody Delicious is glow, not coverage. Mix a little through your BB cream, or press it over your cheekbones once you're done.
- Cool Your Jets is the midday one. A quick mist to keep the hydration going without redoing your whole face.
- Smooth Operator is the last step, for everywhere the other four don't reach. Same hydration, just for your body instead of your face.
And at the end of the day, take it all off with Squeaky Clean and start again tomorrow.
"Keeps my skin hydrated and feeling plump."
— Kristy C., verified review, Excellent BB Cream

Does hyaluronic acid in makeup actually do anything?
Yes. It hydrates while you're wearing it. Put it on and get on with your day.