I've been a retractable brush user since I started my journey in playing with makeup. It started with a P100+ retractable blush brush I bought in Divisoria and I'm hooked to retractable brushes ever since. Despite that retractable brush as something bought in Divisoria, but the bristles of that brush are so soft and gentle to the skin that up to now I use it when I travel since it's so compact and still reliable.
I would like to share with you my experiences with 3 of my retractable brushes. Brushes are an investment and they should be a value of your money.