How to make a shower cap with a plastic bag is simple, but the safest version is a loose, temporary cover rather than a bag tightened around your head. Use a clean, unused bag large enough to cover your hair, keep the plastic well away from your nose and mouth, and secure only the hair bundle or loose plastic—not your neck or airway.
This is an emergency workaround for an adult who needs to keep hair relatively dry for one shower. Plastic bags are a suffocation hazard, so do not use this method for children, anyone who may not be able to remove the bag immediately, or while sleeping.
What You Need
- A clean, unused plastic bag large enough to cover your hair without stretching over your face
- A soft hair tie, scrunchie, or clip
- A towel for your shoulders
You usually do not need scissors. Avoid cutting a bag while it is on or near your head.
How to Make a Temporary Shower Cap With a Plastic Bag
1. Put your hair up first
Gather long hair into a loose bun or coil. Secure the hair itself with a soft tie or clip. Keeping the hair compact makes it easier to cover without pulling plastic tightly around your head.
2. Check the bag
Use only a clean bag with no residue from food, cleaners, chemicals, or unknown materials. Check for holes that would let water through.
3. Place the bag over the hair only
Open the bag fully and place it over the hair from the back/top of the head. Keep the open edge above the eyebrows and away from the nose, mouth, and neck. Your face must remain completely uncovered.
4. Tuck or clip loose plastic at the hairline
Gently tuck loose material around the hair bundle or use a hair clip on excess plastic away from the face. Do not wrap an elastic, cord, or plastic tightly around your head or neck.
5. Test the fit before turning on the shower
Move your head normally. You should be able to remove the cover instantly with one hand. If the bag slips toward your face, feels tight, or interferes with hearing or vision, remove it and use a towel or a purpose-made shower cap instead.
6. Keep it out of the direct spray
A makeshift cover is not a watertight shower cap. Aim the shower spray away from your head and keep the shower brief if keeping your hair dry is important.
Safety Rules That Matter
- Keep plastic away from the face and airway.
- Never use a plastic bag as a shower cap for a child. Keep unused bags out of children’s reach.
- Do not tie, knot, tape, or cinch plastic around the neck.
- Do not use a dry-cleaning bag or a bag that held chemicals or unknown residues.
- Do not use this method while impaired, dizzy, or unable to remove the cover immediately.
- Discard the bag after use if it is wet, stretched, torn, or contaminated.
Better Alternatives
A reusable shower cap is safer and more reliable because it is designed to stay on the hair without covering the face. In a pinch, a clean towel wrapped around the hair can reduce splashes, although it is not waterproof.
If you regularly need to keep hair dry, a purpose-made cap with a comfortable elastic edge is a better choice than repeatedly reusing household plastic bags.
Common Problems
Water gets inside
Do not tighten the plastic around your head to solve the problem. Instead, reposition the hair, keep the spray away from your head, or switch to a real shower cap.
The bag slips forward
Remove it immediately. A slipping bag is not worth trying to secure more tightly around your head.
The plastic pulls your hair
Secure the hair itself before covering it and avoid twisting or knotting the bag into the hair.
Frequently Asked Questions
Is a plastic-bag shower cap waterproof?
The plastic itself resists water, but the open edge is not a reliable seal. Treat it as a splash cover, not a watertight cap.
Can I secure it with a rubber band around my head?
No. Avoid tightening an elastic, cord, or plastic around your head or neck. Secure your hair first and keep the cover loose and instantly removable.
Can children use this DIY shower cap?
No. Plastic bags pose a serious suffocation hazard and should be kept away from children.
Can I reuse the same bag?
A household bag is best treated as a temporary workaround. If it becomes wet, stretched, dirty, or damaged, discard it responsibly and use a purpose-made reusable cap next time.
Bottom Line
You can use a clean plastic bag as a temporary hair splash cover, but safety is more important than creating a tight seal. Keep the plastic completely away from your face and neck, never use it for children, and make sure you can remove it immediately. For regular use, choose a reusable shower cap designed for the job.
