Deformation of the brim is a common phenomenon in hats, especially after being worn or used for a long time. Whether the curved eaves become straight or the straight eaves become crooked, they can be corrected through some simple methods. Here are some suggestions:

1. How to correct the curved hat brim:

1. Hot water soaking method: Soak the hat in hot water, making sure the water temperature is not too high. Then wrap the hat with a towel and gently stretch the brim to restore it to its original shape.
2. Steam fumigation method: Use a steam iron or steam machine to fumigate the hat brim so that the material can restore its deformation ability after being heated, and then shape it according to the required shape.

2. How to correct the hat brim from curved to straight:

1. Wet towel application method: Cover the brim of the hat with a wet towel to soften it with moisture, and then gently bend it into a suitable shape.
2. Combining hot water and towel method: Place the hat upside down on the towel, and then rinse the brim with hot water. Pay attention to the water temperature not being too high. Keep the towel wet. After cooling, gently bend the brim to the desired shape.

When performing correction, you need to pay attention to the following points:

1. Choose the appropriate correction method according to the material of the hat. Hats made of different materials react differently to heat and water. Be sure to understand the material of the hat to avoid damage to the hat caused by improper use.
2. Be gentle when operating. When correcting, handle the hat gently and avoid excessive stretching or twisting that may damage the shape or material of the hat.
3. Pay attention to safety. When using hot water or steam, pay attention to safety to avoid burns or other accidents.
4. Allow to dry after correction. After completing the correction, place the hat in a ventilated place to dry naturally and avoid direct sunlight exposure.

If the above methods cannot restore the original shape of the hat brim, or if it is difficult to operate, it is recommended to seek help from a professional tailor or hat repair shop. They have more professional tools and experience and can better solve the problem of hat brim deformation.

In short, it is not difficult to correct the deformation of the hat brim. As long as you choose the appropriate method and pay attention to safety, you can restore the hat to its original shape. Hope the above suggestions are helpful to you!