Frequency Separation Retouching: Skin Texture Without Plastic Look
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A specialist Photoshop retouching guide to the Frequency Separation technique covering the technique’s image-separation physics, the complete action setup, and the colour and texture retouching protocols that produce natural-looking skin.
Description
Frequency Separation is the retouching technique that separates skin texture information from colour and tone information, enabling the retoucher to smooth colour and luminosity inconsistencies without flattening the biological texture that makes skin look alive rather than plastic. This guide provides complete mastery of the technique from its optical physics to its advanced application. The image-separation physics of Frequency Separation is explained clearly: how a Gaussian Blur applied to the colour layer removes fine texture while retaining colour and luminosity variation, how the Apply Image command on the texture layer retains surface detail while removing colour information, and why the two layers can be edited independently without creating the blending artefacts that affect conventional retouching approaches. The complete Photoshop action setup for Frequency Separation at different blur radii for different image scales is detailed step by step, with the specific blur radius selection guidance for different skin types, sensor megapixel counts, and output resolutions. Colour layer healing technique — the Healing Brush and Clone Stamp workflow for removing blemishes, redness, and uneven pigmentation without affecting skin texture — and texture layer softening techniques for managing large-pore texture are detailed with case study imagery descriptions.
