Jennifer Lopez. Halle Berry. Elle Macpherson. Like most of Hollywood, these stars are on the Benjamin Button aging track. But you don’t need to have a crazy bank account to start fighting fine lines and wrinkles. We found the “Benjamin Button Magic Formula” — it’s REN skincare’s instant firming beauty shot. And it works immediately. And it’s actually affordable.

This gel serum starts working within minutes (you don’t have to wait months for results!) to smooth out fine lines and wrinkles. Plus, the Hyaluronans bio extracts (put on your fancy science hats, everyone) also help with long-term anti-aging and make your complexion feel firmed up over time while promoting your skin’s elasticity.

That’s not even the best part. You can actually apply this firming serum over your makeup. That means you can put it on in the middle of a long day if you’re feeling extra tired or if you’re struggling with jet lag. Basically, it should be in your purse at all times.