TikTok swears by Maybelline's Lash Sensational Serum — and it's only $13
Amazon.com : Maybelline Lash Sensational Sky High Serum Infused Lash Primer for Mascara, Lengthening, Thickening, Tinted and Washable Formula, Soft Black, 1 Count : Beauty & Personal Care
Amazon.com : Maybelline Lash Sensational Boosting Eyelash Serum & Washable Mascara Set, Blackest Black : Beauty & Personal Care