Renault Trafic review (2020) Parkers SERENE HOUSE Citrus Set 100% Natural Essential Oil Gift Set 10ml. Citrus Collection Experience a burst of energy with Serene House's Citrus Collection. Brighten your day with 3 of our favorite 10ml essential oils: Orange, Lemon, and Grapefruit. Lemon Renew your zest for life and restore lost focus. Orange Awaken joy and feel energized to take on anything that may come your way. Grapefruit Feel revitalized and refreshed as you brighten your mood! Serene House is a pioneer in air care products that enhance your sense of overall wellness. Our essential oils are 100% pure and natural, free of synthetics, parabens, and GMOs.