A CLINICAL ROUTINE

The 4S
Routine

The same four-stage sequence we have refined over two decades of clinical practice — translated into a routine you can follow at home.

1 Stop 2 Stabilize 3 Strengthen 4 Sustain
92–95%
Documented patient efficacy
20 yrs
Of clinical refinement
Routine trajectory
9-month arc
Fall arrested, cycle balanced, density built — then carried forward.
Stop
Stabilize
Strengthen
20 yrs
Clinical practice
92–95%
Patient efficacy
Thousands
Patients treated
4 stages
One sequence
A note from the clinic

Hair loss is rarely solved in a single gesture. It is slowed, then stabilized, then strengthened and finally, sustained controlably. 4S Routine is the sequence we have perfected for twenty years, condensed into 4S's and 4 phases.

Dr. Satya Saraswat

Dr. Satya Saraswat MBBS, MS, MCh, DNB Gold medalist

Medical Director · Plastic & Hair Restoration Surgeon

Gold Medalist Plastic Surgeon, honoured by the Health Minister of India, and Diplomate of the National Board (DNB) in Plastic Surgery. He leads the team behind this protocol.

Accreditations & memberships
Fellow · ISHRS (FISHRS) ABHRS AHRS IACLS ASI APSI IMA
20+ years of experience
DNB Plastic Surgery · National Board of Examinations, New Delhi
Dr. Preeti Saraswat

Dr. Preeti Saraswat MBBS, ABHRS, PG Dip. Clinical Cosmetology

Clinical Cosmetologist · Hair Loss Treatment

Postgraduate diploma in clinical cosmetology from the University of Greifswald, Germany, with advanced training in laser treatments. She specializes in hair loss treatment and customized, natural-looking results.

Accreditations & memberships
ISHRS ABHRS AHRS IACLS IMA AAAM
University of Greifswald, Germany
PG Diploma, Clinical Cosmetology · MBBS, Kanpur
STAGE 01 / IV · STOP Months 01 - 03 · The first quarter
Halt the fall

Stop.

Slow the ongoing hairfall to almost a stop, before attempting anything else.

The first three months are not about regrowth. They are about stopping hairloss. Following the routine we share with you on Rootinly, the 1st phase is built to stop the active shedding at its source, so the next phases can begin on healing roots.

In twenty years of treating thousands of patients, this initial intervention has stopped active fall in 92 - 95% of cases. It is the foundation on which everything else stands.

92–95%
Patient efficacy in halting active hair fall, observed across two decades of practice with this routine
Active fall, halted Month 03
ACTIVE FALL HALTED
STAGE 02 / IV · STABILIZE Months 04 - 06 · The second quarter
Balance the cycle

Stabilize.

Balance the hair growth cycle, stabilize the shedding hairs with the growing ones.

With the hairfall decreased, the next three months are dedicated to stabilizing the hair cycle. Every hair on the scalp cycles mainly between two phases: the anagen, where they wake up & grow, and telogen, where they sleep & shed. Stabilization brings these two phases into equilibrium.

In the Stabilization phase, we work to wake up the sleeping roots, while prolonging the ones in an active state.

Anagen
Growing
Hairs actively lengthen, draw nutrients, and hold the scalp.
Telogen
Resting
Hairs rest, then shed — making space for the next cycle.
Cycle in equilibrium Month 06
ANAGEN TELOGEN EQUILIBRIUM
STAGE 03 / IV · STRENGTHEN Months 07 - 09 · The third quarter
Build density

Strengthen.

Thicken the hairs that stand. Build the apprearance of denser hairs.

By month seven, the hairs that survived and resurfaced need fortification. The S4 routine, now turn to keeping each strand in growing phase for as long as possible, thickening the shaft itself.

This is where mathematics begins to matter. Hair volume is not linear with thickness; it is governed by the square of the radius. Doubling a strand's radius does not double its volume: it quadruples it. The reverse is also true: a strand halved in radius retains only a quarter of its volume.

Strengthening, in other words, is the highest-leverage phase of the S4 routine.

Volume scales with radius² × 4
2r r ×4
The equation · hair volume
V = πl × d × a
V
Total hair volume
π
The constant, pi
r
Radius of the strand
l
Length of the strand
d
Density per cm²
a
Area of the scalp
The leverage

Double the radius and the volume quadruples. Halve it and it falls to a quarter.

Strength is not added, it is squared. A small, durable gain at the root compounds into the density you can see.

STAGE 04 / IV · SUSTAIN Month 10 → onward
Carry it forward

Sustain.

Carry the gains forward - rootinly, daily, indefinitely.

The final S is not a phase, but a rhythm. The stop, the stabilization, the strengthening. None of the gains are owed to you once achieved. They must be sustained.

In the sustain phase, we lower the dose of the medicines, decreasing the monthly maintanance cost to less than half. Among the 92 to 95% of patients who respond to the protocol, the answer is the same: continue. Slowly, Cautiously, Rootinly. We will always be here to hold your hand.

Your Hair need active care, only rootinly usage will ensure they get the sufficient nourishment they need.

On the philosophy of maintenance
A continuous practice M.10 → ∞
SUSTAIN DAILY · ONGOING

Nine months, charted from the first day to the last.

Three quarters of a disciplined routine followed by a quiet, ongoing rhythm. Rootinly asks something of you every day, but very little of your time each day.

Stage i
Stop
M01 — M03
Slow down active fall using the opening routine. 92–95% efficacy across two decades.
Stage ii
Stabilize
M04 — M06
Balance anagen and telogen phases. The hairfall becomes a steady state.
Stage iii
Strengthen
M07 — M09
Thicken the hair. Volume scales with the square of radius, small gains compound.
Stage iv
Sustain
M10 → ∞
A quiet maintenance rhythm. Doses & costs lowered, routine preserved, gains carried forward.
M·01begin
M·02
M·03halt
M·04
M·05
M·06balance
M·07
M·08
M·09density
M·10 →ongoing
Begin your protocol

A nine-month conversation between you and your hair.

The same sequence we have refined for two decades, now available through Rootinly. Personalized to your scalp, your phase, your pace.

20 yrsClinical practice
92–95%Patient efficacy
1000sPatients treated
9 moTo full protocol
Rootinly The 4S Routine · Stop · Stabilize · Strengthen · Sustain