Biaya, harga, keratin, hair, treatment, perawatan, rambut, di, salon, rumah, shampo, sampo, shampoo, kondisioner, produk, paket, fungsi, efek samping, kandungan, formaldehid, pelurusan, teknik, kimia, kulit, kepala, batang, konsultasi, ahli, 2019, 2020, tarif.