CitriLux™ Shampoo Solves Flea and Itching Problems Naturally! Fresh citrus fragrance Solves flea and dry, itching skin problems Formulated with natural oils, aloe vera, and eucalyptus bark Specially developed, proven formula contains 5% d-Limonene, extract of pennyroyal, eucalyptus bark, aloe vera, and other natural oils. Leaves a pleasant citrus scent and has excellent sudsing action. Full-strength formula is ready-to-use. Safe for puppies and kittens over 8 weeks old. Ready-to-use formula. CitriLux Shampoo is available in the sizes listed below.