This is "Neutral Soap Fix D2O," a professional buffer soap from Safety, a manufacturer of salon-exclusive products. It's an acidic shampoo for pH control, used after hair coloring or perming. It neutralizes and removes "alkali" left in the hair after treatment, returning the hair to its natural slightly acidic state, preventing damage and color fading. This is a large, 1000ml (refill) size for professional use. 【※Please Read Carefully: Condition】 Although new and unused, the packaging (outer box) has "damage, scratches, and dirt" due to storage. Please purchase only if you do not mind the appearance. 【Product Details】 ・Product Name: Neutral Soap Fix D2O ・Contents: 1000ml (refill) ・Suggested Retail Price: Open price due to salon-exclusive product (Salon price: 6,900 yen) ・Country of Manufacture: Japan 【Product Features】 ● Removes residual alkali by using it immediately after hair coloring, perming, or straightening. ● Balances the hair's pH and tightens the cuticles. ● Prevents hair color fading and improves color retention. ● A genuine item used by professionals in the field as an "after-treatment agent" to eliminate the source of damage. 【Recommended for those who】 ・Are concerned about rough hair or rapid color fading after coloring. ・Want to improve the longevity of perms and straightening treatments. ・Are looking for professional-grade hair care products. ・Don't mind package damage and want to purchase at a bargain price. 【Condition】 New and unused #Safety #NeutralSoap #FixD2O #Buffer #AcidicShampoo #AfterTreatmentAgent #AlkaliRemoval #HairColor #SalonExclusive #ProfessionalUse #Bargain