tarte Opening Act Lash Primer — Full-Size White Conditioning Lash Base with Vitamin C & Castor Oil for Longer, Fuller Lashes

Start your lash routine with a conditioning primer that doubles as a treatment. This full-size tarte Opening Act primer uses a white-tinted, buildable formula and a 360° magniLASH brush to coat each fiber evenly, helping mascara grip better and creating more visible curl, length and volume while delivering nourishing ingredients like vitamin C and castor oil.

How does this primer change my mascara look?

The primer creates a lightweight base that lifts and thickens lash fibers so mascara applies more smoothly and looks more dramatic. It builds subtly without flaking and helps mascara hold curl and pigment for a more defined finish.

• 360° magniLASH brush for even pigment and lift
• white-tinted formula builds visible thickness under mascara
• improves mascara adherence for longer-lasting wear

What ingredients are in the formula and why do they matter?

Formulated with plant-derived cellulose for body, carnauba wax for smooth application and olive esters to condition, the primer blends cosmetic performance with skin-friendly components. Vitamin C is included to help support lash appearance without aggressive actives.

• cellulose: adds natural thickness and structure
• carnauba wax: smooth, even coating and lift
• olive esters & castor oil: help moisturize and condition lash fibers
• vitamin C: supports overall lash vitality appearance

Is this primer safe for sensitive eyes and contact lens wearers?

Yes — the formula is ophthalmologist- and dermatologist-tested and suitable for contact lens wearers. It’s also free of common irritants like parabens, mineral oil, phthalates and sulfates, making it a gentler option for many users.

• ophthalmologist tested & safe with contacts
• dermatologist tested for skin compatibility
• formulated without parabens, mineral oil, phthalates, SLS, triclosan or gluten

Who is this for? If you want lashes that look fuller, longer and more defined without switching mascaras, tarte Opening Act Lash Primer fits neatly into a daily beauty routine. It’s designed for anyone seeking extra lift and volume—especially people with finer or shorter lashes, those who want their mascara to last and wearers who prefer vegan and cruelty-free options.

Ingredients

Please refer to product packaging for the most up to date list of ingredients and country of origin. Water/Aqua/Eau, ethylene/VA copolymer, copernicia cerifera (carnauba) wax/cera carnauba/cire de carnauba, hydrogenated olive oil stearyl esters, glyceryl stearate, nylon-12, cetearyl stearate, stearic acid, palmitic acid, triethanolamine, silica, hydrated silica, phenoxyethanol, hydroxyethylcellulose, hydrogenated castor oil, synthetic wax, cellulose, dimethicone, babassu oil glycereth-8 esters, cetearyl alcohol, ascorbyl palmitate, ethylhexylglycerin, disodium phosphate, polysorbate 60, tocopherol, sodium phosphate.