An SSL Proxy uses the Secure Sockets Layer (SSL) for securing data transmissions. SSL is part of the HTTPS protocol. It is used for websites accepting and transmitting sensitive data, such as bank details. A proxy can substitute its IP address for yours on traffic to websites you visit. An SSL proxy transfers data from your web browser using SSL. You can also use to transmit private documents via the Internet.
You can use it as regular proxy in you browser manual proxy settings, only that, is more secure and protect your sensitive information like emails, credit card information, bank details and more