How to make a plastic shower cap

Written by heather inks
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How to make a plastic shower cap

Plastic shower caps are helpful to protect recently dyed or styled hair from the water or rain. They are also helpful when dying, curling or pinning hair at home, especially if the product or style will need to be left undisturbed for several hours or if the curlers or rollers must set overnight. For hair that is being lightened or bleached, shower caps can capture excess heat being released from the head and keep it near the scalp, allowing the product to work faster and more efficiently. Shower caps are very simple to make, requiring only a few supplies and some basic sewing skills.

Skill level:

Things you need

  • Plastic material
  • Tape measure
  • Small elastic band, less than 1 inch wide
  • Sharp, high-quality scissors
  • Thread
  • Sewing machine or needle

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  1. 1

    Purchase a half-yard of plastic material for a small shower cap, or three-quarters of a yard for a large shower cap (needed to cover large rollers, clips, or long and thick hair). These plastic materials can be clear, opaque or semi-transparent, or can have pretty designs on them.

  2. 2

    Measure the distance around the head where the shower cap is expected to end. Add 1 inch to this figure for overlap purposes. This will be the shower cap circumference.

  3. 3

    Purchase elastic, less than 1 inch wide, and cut to the shower cap circumference.

  4. 4

    Measure the distance over the top of the head from ear to ear. Now add 2 inches to this figure for short hair and up to 6 inches to this figure for very long, full hair or to cover large hair-straightening rollers. This number will be the diameter of the circle you will cut out of the plastic material.

  5. 5

    Measure the diameter across the piece of plastic or waterproof material and mark end points with a permanent or semipermanent marker. Repeat this three to eight more times, creating points around the circle.

  6. 6

    Connect the points around the circle with the marker and cut the circle out of the plastic material.

  7. 7

    Pin the elastic band to the outer edge of the circle. As this is pinned, gather the material as if gathering for a skirt. Continue until the entire circumference of the circle is pinned.

  8. 8

    Sew the elastic to the cap and remove the pins. The elastic can be sewn on the outside or inside of the shower cap edge. Or the elastic can be pinned down, sewn, and then one or two folds (or rolls) made, then sewn again to "case in" the elastic inside the edge of the plastic cap.

Tips and warnings

  • To make a shower cap for very long, thick hair using large straightening rollers, it might be necessary to set the rollers and then measure across the head.
  • Use safety precautions when using sharp scissors, needles and pins as well as when operating a sewing machine.
  • Sew the cap circumference slowly on the sewing machine to reduce the chances of injury.

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