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How to remove efflorescence?

There is a lot of efflorescence on the facade of the house, brick facing, straw color.

Tried "Prosept Cement Cleaner – Remover of efflorescence" mixed 1 to 2 with water – nothing, undiluted also had no effect. On the test wall was a solution of hydrochloric acid and hydrogen peroxide. The wall dried out and left a drip of drips. And tried primer on the facade, also the brick takes on a wet color and all in drips. Trying to wash them off is even worse, you get some stains on the brick.

Is it at all possible to remove this efflorescence? Maybe some kind of varnish can be applied on top?

• brick
• facade
• efflorescence