When the leather clothes are wrinkled, you can use a non-steam iron (steam iron is not allowed) to pad a silk or cotton lining on the leather clothes, and then gently iron the wrinkles at medium and low temperatures. Direct contact of iron with leather surface is prohibited. You can go to the store to buy a box of "leather brightener", which contains a bottle of detergent and a bottle of brightener. Spread the leather coat flat on the table, wipe it with a dry towel dipped in detergent, then clean it with a dry towel and dry it in a ventilated place. Then, apply brightener. Shake the brightener well and pour it into a small container. Then dip the sponge in brightener and brush it evenly on the leather coat in the order of neckline, front, back and sleeves. Don't brush the brightener too thick and don't brush it repeatedly. Then hang the leather coat in a ventilated place to dry.
One more thing, it is impossible not to wrinkle. Wrinkles are formed because pants have extra allowance to contact with the body, which will cause indentation after a long time. If you want to reduce wrinkles, you can lift your pants up a little before sitting, or pull them down a little, so that the part that contacts the chair will be smooth and the redundant part can be minimized. Should be feasible. The smell of mountains and seas will answer you.