LE04-PhytoSpan B⁴ Botanical Scalp Treatment Serum (Length Retention)

A concentrated weekly botanical scalp treatment for the plant-powered side of The Length Equation™.

PhytoSpan B⁴ brings together four plant-derived ingredients—Pumpkin Seed, Ginseng Root, Gotu Kola and Green Tea—in an aloe-based serum created for direct scalp application. The B⁴ represents the four principal botanicals at the heart of the formula.

Pumpkin Seed and Ginseng form the foundation of the botanical complex, while Gotu Kola—also known as Centella asiatica—and antioxidant-rich Green Tea complete the treatment. Panthenol, betaine and aloe provide additional conditioning and hydration to support a well-cared-for scalp.

PhytoSpan B⁴ is deliberately concentrated and intended as a weekly treatment. Apply a small amount directly to the scalp in sections, massage gently and leave in.

Two Serums. Two Approaches. One Length Equation.

The Length Equation™ recognizes that there is more than one way to support a thoughtful Grow + Retain routine.

PhytoSpan B⁴ is our botanical pathway—a concentrated treatment built around Pumpkin Seed, Ginseng, Gotu Kola and Green Tea for customers who prefer a plant-centered approach to scalp care.

Hairspan L² represents our biotech-forward pathway, pairing Chlorella-derived extracellular vesicles with N-Acetyl Glucosamine (NAG), Niacinamide and complementary conditioning ingredients in a scalp + hair longevity serum.

They are not duplicates, and one does not replace the other. Each approaches scalp and hair care through a different formulation philosophy while supporting the broader goal behind The Length Equation™:

Growing length is one part of the equation. Caring for the scalp, conditioning the fiber and retaining the hair you grow completes it.

Key Ingredients

Pumpkin Seed — A plant-derived seed extract selected for its naturally occurring botanical compounds and scalp-conditioning properties.

Ginseng Root — A traditional botanical incorporated as part of PhytoSpan's concentrated plant complex.

Gotu Kola (Centella asiatica) — A botanical widely used in skin and scalp-care formulations for its conditioning and skin-supportive properties.

Green Tea — An antioxidant-rich botanical that complements the scalp-focused plant complex.

Best For

• Botanical-focused hair-care routines
• Weekly scalp treatments
• Dry or neglected scalp care
• Customers seeking an alternative to biotech-forward scalp formulations
• Grow + Retain routines
• Natural, curly, coily and textured hair
• Protective-style routines
• Customers who prefer concentrated leave-on treatments

Directions

Use approximately once weekly. Apply a small amount directly to a clean or freshly cleansed scalp in sections. Gently massage with fingertips until evenly distributed. Do not rinse. Style as usual. A small amount may also be smoothed over the hair where desired.

Because PhytoSpan B⁴ is a concentrated treatment, begin with a small amount rather than saturating the scalp or hair.

For external use only. Avoid contact with eyes. Discontinue use if irritation occurs.