First always clean and moisturize your face. If you're going out in the day time use a good sunblock. For my nude make up look I like to use a tinted moisturizer but since it seems Lorac no longer makes the tinted moisturizer in beach bronze I have been using Revlon's color stay foundation which has a medium to full coverage. After applying your base foundation apply concealer (if needed) to the appropriate areas such as under eyes, around the nose, on blemishes. Blend well and then buff your powder foundation into your skin. MAC's mineralize skin finish natural powders work well and better if they are buffed into the skin. After this apply a quick sweep of blush and two coats of mascara then you're done.
Now for what the professionals have to say
What it says:
"One perennial look that remains after several seasons is the nude face. The designers who showed this look exceptionally well were Hussein Chalayan, Dice Kayak, Stella McCartney and Haider Ackerman. This could easily be a sensible request from the designers to their makeup directors that they don't want anything to distract from the clothes and nothing completes a collection or an outfit like a clean fresh face.
A good nude face starts with a proper skin care regime - using a good mask and scrub weekly is pivotal. Try NV Perricone Firming Mask to improve the skin's resilience, tone and texture. A daily use of a moisturiser like SkinCeutical Emollience and Hydrating B5 will help keep the face moisturised for the long haul.
Once skin care is in order the next step is to use a makeup primer. This not only prepares the skin for makeup but keeps it looking fresher longer. Try Laura Mercier Foundation Primer or Nars Makeup Primer SPF 20 followed by an effective foundation like Lancome Color Ideal or Chanel's Teint Innocence. Finish with a light blush like Becca's Turkish Rose and a good lick of mascara, like Mac Zoom Lashes. Voila your nude/fresh face is complete!"