There are numerous strategies available for taking advantage of increases or decreases in volatility. These strategies are called non-directional strategies or volatility strategies. They are delta neutral strategies.
Volatility is subject to the forces of supply and demand.
Implied volatility will tend to rise during periods when demand from options buyers is strongest and will fall when demand is weakest. The key for all options trader is to buy volatility when it is perceived to be low and to sell volatility when it is perceived to be high. Strategy Buy call and put with same strike price. Sell call and put with same strike price. Buy call and Buy put with lower strike.