An SIP works like a recurring investment, where the amount is auto-debited from your bank account and invested in the mutual fund of your choice. Once the amount is deposited, you get a certain number of units of the mutual fund scheme where you have invested.
SIPs can help you minimise market volatility by eliminating the guessing game of market performance. Regular investing ensures that the average purchase cost is evened out in the long run.
When the markets rise, you get fewer units, and when the markets fall, you receive more units. This may minimise your risk and ensure you acquire investments at a lower average cost per unit.
Saving a small sum of money regularly for long periods of time can have an impact on your investment because of the effect of compounding.