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Tom Pecheux, global beauty director for YSL Beaute, has done the makeup of everyone fromPrincess DianatoKate Moss.

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In a recent masterclass, he let us in on his beauty secrets.

Read seven of the best, below.

Then, when youve finished everything else, apply a second coating of traditional mascara.

With this trick, you create a solid base, so that doesnt happen, he says.

Gently pressing them against the face after applying foundation will help remove any excess product.

Know that concealer is a multi-purpose product

The under-eye staple is great for light contouring.

Pecheux applies the product using his fingers by making upwards strokes.