ENGLEWOOD CLIFFS, N.J. — Unilever is taking what it considers to be a breakthrough approach to hair care — by focusing on the scalp, rather than the ends — with its Clear Scalp and Hair Therapy line that hit North America in May. Already found in more than 40 markets around the world, Clear is Unilever’s fastest-growing hair brand, the company stated. Now formulated for the North American consumer, the Clear Scalp and Hair Therapy collection includes customized product ranges for women, men and African-American women.