Natural ingredients and plant extracts are the basis of Aveda's shampoos and hair treatments. You can concoct your own perfumes from the impressive selection of essential oils. The Spring Street and West Broadway locations also have hair-salon services. Subway: E, V to 5th Ave./53rd St. Other locations: 140 5th Ave., at W. 19th St., Flatiron District, PHONE: 212/645-4797; Subway: R, W to 23rd St. 233 Spring St., at 6th Ave., SoHo, PHONE: 212/807-1492; Subway: C, E to Spring St. 456 West Broadway, between Prince and W. Houston Sts., SoHo, PHONE: 212/473-0280; Subway: F, V to Broadway-Lafayette St. 1122 3rd Ave., between E. 65th and E. 66th Sts., Upper East Side, PHONE: 212/744-3113; Subway: 6 to 68th St./Hunter College. 10 Columbus Circle, at W. 59th St., Midtown West, PHONE: 212/823-9714; Subway: 1, 9, A, C, B, D to Columbus Circle.