Delta Neutral Options (DNOs) or Delta-Neutral Positions are designed to negate the directional bias of an existing position. For example, if you sold a bullish put credit spread you want to defend, you could buy directional puts to counteract the bullish bias. When a sufficient number of puts have been purchased to counteract the spread's bullish bias with neutralized delta, movement no longer significantly changes the net position's value.
This technique is used in the Advanced 11-Hour Options and related courses available from Base Camp Trading. Please refer to those courses to learn how and when to use this powerful technique.