The Logical Choice for Gentle, Safe, & Natural Products for the Entire Family Nourishes & Detangles Hair Naturally & Gently. Natural. Non-Toxic. Eco-Friendly. Hypoallergenic Infused with pure lavender essential oil, which is known to deter head lice and other insects and will leave hair freshly scented. LiceLogic® Repel Conditioner is formulated using nature s finest conditioning agents and is natural, gentle, and can be used daily in place of your everyday conditioner. LiceLogic Repel Conditioner provides superior conditioning and is infused with pure lavender essential oil which is known to deter lice.