https://lnproxy.org/ is a service where you paste a lightning network invoice and you get a wrapped one, where the payment hash is still the same (so only you have the pre-image) but the destination pubkey is replaced by the lnproxy intermediate node. And the amount is bumped by the proxy fee (usually ~0.1%).

So when you share the wrapped invoice, you don't disclose the real destination node pubkey. And because the payment hash is still the same as in your original invoice, you don't have to trust the proxy with your funds.

Once the path is made, between the origin node to the proxy node and then from there to the destination node, the preimage is revealed and the payment is settled (as any regular LN payment).