Our Deep Conditioning Treatment is Designed to Help Strengthen & Condition Thin, Over-Tweezed, Undernourished Eyebrows. The vitamin and protein enriched conditioner works to help your brows look fuller and thicker. For best results, apply to eyebrow area nightly for 30 days. Regular use is recommended to help maintain thick, healthy looking eyebrows. Comes with a convenient brush-on applicator. The Facts about Brow Boost. How many applications will one tube of your Brow Boost provide? With regular use, one Brow Boost tube provides a 1 month supply. When can I expect to see results? After 30 days of ni.