Both ginger and turmeric are generally considered safe and without significant side effects, and both are available as capsules from health-food stores. However, each may interact with certain prescription medications, and neither should be taken if you are pregnant. Do not self-treat with either ginger or turmeric.
Think of the leather in your car as skin that needs to be cleaned, conditioned, and protected to maintain a healthy appearance. Similar to our skin, if we do not take care of leather, it will dry, crack, and eventually break over time. Wrinkles in leather are caused by environmental stress, heat, or damage from regular wear and tear.
Another reason to replace a seat is if a valve has broken because the seat is not concentric with the guide. Misalignment between the seat and guide causes the valve stem to flex every time the valve closes. Eventually, this flexing leads to metal fatigue and valve failure.