MD Pen Healthy Scalp Rejuvenating Shampoo, 8oz. Price: Price not available. Description: Formulated with salicylic acid and fireweed extract to boost the health of the scalp while stimulating keratinocytes to aid in renewed hair growth. Contains a human stem cell extract and proteins to help nourish and strengthen new hair as it grows, while adding sericin for volume and fullness..

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Formulated with salicylic acid and fireweed extract to boost the health of the scalp while stimulating keratinocytes to aid in renewed hair growth. Contains a human stem cell extract and proteins to help nourish and strengthen new hair as it grows, while adding sericin for volume and fullness.