Shampoo/Brush Mystery Solved!

And now that I have finally managed to trawl the interwebs, I finally figured out which beauty blogger gave the original bit of advice to use 2-in-1 conditioning shampoo for your makeup brushes.

Behold, this bit of advice from Daneen Baird of Spoiled Pretty, as quoted on Glamour's website:

After investing in a new set, wash and condition them with a two-in-one shampoo and conditioner before using them—and then once a month after that—to cut down on bristle shedding and make them last and last.

Thanks, Daneen! :)