What is the best way to layer curtains for maximum light and thermal control in a bedroom?

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    Use a two-layer system: a lightweight, washable cotton base layer followed by a heavy thermal/blackout outer panel. This creates an insulating air gap between the layers that helps regulate room temperature and prevents "light leaks" that occur with single-panel installations. This setup is highly recommended by the r/BuyItForLife community for its long-term durability and superior performance in both summer and winter climates.