Yves Saint Laurent Beaute's new Youth Liberator Serum Foundation ($89) promises younger-looking skin in weeks as it covers imperfections and evens out the complexion instantly.

But it works best if you use the brand's Forever Youth Liberator skincare line.

The hydrating foundation with SPF20 is said to boost the skincare line's anti-wrinkle, firming and lifting effects.

Available in 12 shades, the silky foundation offers medium to high coverage and a glow.

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