Schwarzkopf BC Bonacure Conditioner pH 4.5 Color Freeze 33.8 Ounce 1000 Milliliters Strengthen your hair structure and provide effective care with Schwarzkopf Professional BC BONACURE pH 4.5 Color Freeze Conditioner. With pH 4.5 balancer technology, this conditioner instantly tightens your inner hair structure and provides effective care. This high performance formula tame frizzy hair, revives dull colour effectively and adds shine to over-processed or colour-treated hair.