I have a cotton polo shirt However is a bit big for me but a size lower is way too tight Can I shrink it a little by using the dryer

Yes, you can shrink cotton by putting it in the dryer.

Materials you'll need:

Instructions:

Wash the polo shirt in hot water using your washing machine's hottest setting.
Dry the polo shirt in the dryer on the highest heat setting.
Check the polo shirt periodically to see if it has shrunk to the desired size.
If the polo shirt has not shrunk enough, repeat steps 2 and 3.
Once the polo shirt has shrunk to the desired size, remove it from the dryer and let it cool completely.

Tips:

To prevent the polo shirt from shrinking too much, check it frequently while it is in the dryer.
If you are unsure of how much the polo shirt will shrink, it is best to err on the side of caution and dry it on a lower heat setting.
You can also use a measuring tape to track the polo shirt's progress as it shrinks.

Related questions:

Can you shrink a polyester shirt in the dryer?
No, polyester is a synthetic fiber that will not shrink in the dryer.
Can you shrink a cotton shirt in the microwave?
No, microwaves can damage cotton fibers and should not be used to shrink clothes.
Can you shrink a cotton shirt in boiling water?
Yes, but this method is not recommended as it can damage the cotton fibers.
How can I shrink a cotton shirt without a dryer?
You can hand-wash the shirt in hot water and then hang it to dry.
How can I shrink a cotton shirt evenly?
Use a spray bottle to mist the shirt with water and then put it in the dryer on a low heat setting.

Related hot selling items:

DHS DJ40W 3-Star Ping Pong Balls ABS New Material Professional ITTF Approved 40+ Table Tennis Balls for WTT Competition 6pcs/Box
$10.69

DHS DJ40+ 3 Stars Ping Pong Balls Professional 40+ Seamed Table Tennis Balls ABS New Material for WTT Competition ITTF Standard
$10.69

DHS DJ40+ 3 Stars Ping Pong Ball ITTF Standard 40+ Professional Table Tennis Balls ABS New Material for 2020 WTT Competition
$8.69

Original DHS 40+ 3 stars new cell dual table tennis ball new technology seam ball for ping pong racket game wholesales 10 balls
$90.55

DHS 2020 World Table Tennis Championships Dedicated Table Tennis 3-Star 40+Three Star Professional Competition WTT Balls
$170.47

DHS D40+ 3Star preferred ABS Table Tennis Balls
$10.23

Original Dhs Palio Sanwei 729 40+ 3 Stars New Table Tennis Ball New Technology For Ping Pong Racket Ittf Approved
$6.42

Original DHS 40+ 3 stars new cell dual table tennis ball new technology seam ball for ping pong racket game wholesales 10 balls
$111.13

Original DHS 40+ 3 stars new cell dual table tennis ball new technology seam ball for ping pong racket game wholesales 10 balls
$92.61

DHS Top Quality 3 Stars Table Tennis Balls 40 MM New Material Balls With Color Box For International Standard Competition
$176.08

Original 729 DHS JOOLA PALIO SANWEI 40+ 3 stars new table tennis ball new technology for ping pong racket game Olympic Games
$7.34

DHS 2020 World Table Tennis Championships Dedicated Table Tennis 3-Star 40+Three Star Professional Competition WTT Balls
$164.01

I have a cotton polo shirt. However is a bit big for me but a size lower is way too tight. Can I shrink it a little by using the dryer?