From there you can follow these steps in cleaning the throw pillow the right way.
Step 1: Remove the cover of the throw pillow
Step 2: Pretreat the pillow with a prewash spray and rub it in gently with a damp sponge or cloth.
Step 3: Throw the pillow into a front-loading washing machine. Set it to a warm or hot water delicate cycle. Then add a mild detergent. To prevent damage to your pillow, ensure you place two pillows in the washing machine to balance it out.
Step 4: Take the pillow out of the washer at the end of the cycle. Use a towel to absorb excess water in the pillow. Then air-dry it or hang it out in the sun to dry. If it can be placed in the dryer, then tumble dry on low heat.
Step 5: Check, by pressing the pillow to ensure it’s completely dry. Residual water can cause molding. If the pillow is still wet, repeat the process in step 4 above.
If it’s completely dry. Fluff it, to reshape it.