I would suggest consulting w/ someone at Limeworks USA - https://limeworks.us/

They are experts w/ restoration of historic masonry of all types. Off top of my head Im thinking the clear silicate finish which serves to consolidate the loose particles and forms more of a chemical bond (vs a paint film that coats the surface). I will be using that on my 100 yr old concrete which has become worn and porous.

But I dont know for sure or if there might be something better for brick - so LW would be the ones to ask! They will help you for free - you would just send pics and email describing the problem.

Thank you! I will contact them!

I don’t know where you are located, but we used product we bought from Edison Coatings in Plainville, CT when we needed sealer and lime mortar for our 1837 brick home. They were very helpful with advice and information, you may need to have a contractor order the products for you, as we did, as I believe they are wholesale. The sealer is a siloxane type sealer that protects the brick while letting moisture escape through it. It was easy to use, we did it ourselves and rolled it on with a fluffy nap roller.