Device-Based Scalp Care: High Frequency + Cold Plasma Step by Step

Three supportive scalp sessions — and the progress is already visible: new hairs have appeared in the focal areas, while both new and existing hair looks shinier, stronger, and silkier.

This case shows how esthetic care can be built into a broader dermatologist-guided plan.

The client's primary care was led by a dermatologist; Mariangel Hospedales performed the supportive scalp-care block:

scalp cleansing → high frequency → cold plasma

SEE WHAT WAS USED →

Meet Mariangel Hospedales, Esthetician

This protocol was performed by Mariangel Hospedales — an esthetician with over 8 years of experience, specializing in acne-, melasma-, and hyperpigmentation-prone skin.

Mariangel builds her protocols around skin analysis: what the skin is showing, what the client wants, and which sequence will deliver the most balanced visible result.

Condition & Goals of the Supportive Care Block

Client: female, 23 years old, Fitzpatrick III

Medical context: alopecia areata

Course: 3 sessions following an identical scheme (the client continued with an additional block of 3 sessions)

Visible result: a cleaner, healthier-looking scalp; hair looks shinier and stronger; new hairs were observed in the treated areas

Clinical context:

an interdisciplinary treatment carried out in coordination with dermatologic care. The dermatologist leads the primary treatment with platelet-rich plasma (PRP) and additionally recommended LED light therapy and high frequency.

The Hair Growth Cycle: Why Visible Progress Follows a Timeline

The hair follicle is a dynamic structure that constantly transitions between different phases of activity.

The visible hair shaft is formed inside the follicle: in its lower portion, matrix cells participate in forming the new hair, while the dermal papilla is an important part of the follicle's regulatory system.

The cycle itself consists of four main phases:

Anagen

the active phase, during which the follicle forms the hair shaft.

Catagen

a brief period of regression and transition.

Telogen

a phase of relative rest.

Exogen

shedding, when the formed hair detaches.

After this, the follicle can begin a new cycle. Follicles on the scalp work asynchronously. Hairs in anagen, catagen, telogen, and exogen can sit side by side at the same time. That is why any visible hair-growth progress is best evaluated over time and in the context of the full treatment plan. In this case, that matters especially: the appearance of new hairs was observed after three sessions and took place against the background of a comprehensive dermatologist-led plan with PRP.

The Scalp Environment as Part of Professional Care

In a supportive scalp protocol, the esthetician works with more than the hair visible above the surface.

An important part of the professional assessment is the condition of the scalp surface itself: sebum, flaking, corneocyte buildup, and the cleanliness of the follicular openings.

That is why hygiene preparation was the first task in this case.

A prepared scalp surface provides a cleaner working area for the technologies that follow and allows the treatment to be performed in partings more consistently and with more control.

Zemits Technologies in This Protocol

Zemits SalicPure Pro — Serum with Salicylic Acid →

Zemits PureKio PRO — High-Frequency System →

Zemits EvoPlasm — Cold Plasma Technology →

Protocol Logic: Step by Step

1. Scalp Preparation

What was done: Serum with Salicylic Acid — Zemits SalicPure Pro was applied across the entire scalp. After the required exposure time, the product was removed and the surface was thoroughly dried with paper towels.

Why: to clear surface buildup from the scalp and create a clean, dry surface before the device-based steps.

What happens: salicylic acid supports surface exfoliation and helps remove excess oil and corneocyte buildup. In this protocol, SalicPure Pro worked as a preparation step, leaving the scalp clean and ready for the technologies that followed.

2. High Frequency

What was done: direct High Frequency application with the Zemits PureKio PRO across the entire scalp for 10 minutes.

Why: to add a direct High Frequency step after cleansing as part of professional scalp support.

What happens: the glass electrode forms a fine ozone layer near the surface — a care step for skin prone to oiliness and flaking that supports a neat, fresh-looking scalp.

3. Cold Plasma Technology

What was done: Cold Plasma on the Zemits EvoPlasm was used for 15 minutes across the entire scalp, followed by 5 additional minutes focused on the focal areas.

Why: to complete the care block with a non-contact step that supports a clean, calm surface in the treated areas.

What happens: the plasma field forms above the skin — with no contact heat or ablation. After the session, the surface looks clean, calm, and well cared for.