The Sulfate-Free Difference: Why we created the Matcha Rinse Thickening Shampoo

Healthy-looking hair begins long before the lengths. It begins at the scalp.

We created the Matcha Rinse Thickening Shampoo because many shampoos designed for fine, flat, thinning, or shedding hair focus only on temporary volume. Others cleanse so aggressively that the scalp and hair can feel stripped or dry. We wanted a more considered approach—one grounded in the Korean philosophy of caring for the scalp with the same intention we give the skin.

The Matcha Rinse is a weightless, scalp-first shampoo formulated with a sulfate-free cleansing system that gently removes buildup while minimizing disruption to the scalp’s natural barrier. It helps hair look fuller and feel more resilient without compromising softness, making it gentle for color-treated hair and every wash-day ritual.

At the center of the formula is matcha, selected to help detoxify and energize the scalp. We paired it with targeted bio-actives—including acetyl tetrapeptide-3, rosemary, and clover flower—to support stronger-feeling strands and visibly fuller-looking hair.

Each ingredient has a purpose:

  • Matcha helps refresh the scalp and restore a sense of vitality.
  • Acetyl tetrapeptide-3 helps strengthen the hair fiber and support visible fullness.
  • Rosemary is known to support scalp circulation and fuller-looking hair.
  • Clover flower works alongside peptides to help strengthen and fortify strands.

The result is a gentle, sulfate-free cleanse that adds body without heaviness and prepares the scalp for the treatments that follow.

Matcha Rinse reflects everything BASE-K stands for: Korean scalp-care wisdom, modern formulation, and thoughtful ritual. Because shampoo should do more than clean your hair—it should care for where your hair begins.