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Frequency Separation is, hands down, the best way to smooth skin in Photoshop. It allows us to even out blotchiness, rough patches of skin, dark eye bags or sweaty-looking hot spots without affecting the fine detail and pores in the skin, which means we can enhance a face without getting the blurry, plastic-looking surface that more heavy handed skin smoothing tricks often cause. As the name suggests, this technique lets us separate the image into two versions, based on frequency. A high frequency layer (named ‘Detail’ here) holds all the fine details and textures in the image, like the pores in the skin, the fine lines and the hairs. By contrast, a low frequency layer (named ‘Colour and Tone’ here) contains the colours and tones. By…
