Restoration · Sides and Gel Correction

Gel Correction Sides Technique: What It Is, When to Use It, and Why the 1–2mm Rule Exists

By VEL Academy  ·  Russian Manicure Professional Education

VEL Academy methodology: The Sides technique, height limit, and gel product selection described in this article reflect VEL Academy's approach to lateral wall correction in Russian manicure. The 1–2mm rule and jelly gel vs leveling gel distinction are specific to VEL Academy technique — other schools may apply these methods differently.

The Sides technique is the lightest nail correction intervention — a thin layer of gel along the lateral walls that corrects minor asymmetry without structural rebuilding. Its effectiveness depends entirely on staying within its limits. The 1–2mm height rule is not a guideline — it is the boundary between a correction that works invisibly and one that creates a visible problem requiring additional filing.

What Sides Correction Does

Sides adds gel material specifically to the lateral walls of the free edge — the surfaces that run along the sides of the nail rather than across the top. By adding material here, the technique corrects minor asymmetry in the lateral parallels: the two imaginary lines that run along the sides of the nail from the growth zone to the free edge tip.

When the lateral parallels are slightly uneven — one side slightly narrower or wider than the other — Sides correction builds up the thinner side until both walls match. The result is a free edge that appears symmetrical from all angles, without any material being added to the nail plate surface itself.

Sides gel correction applied to lateral walls of free edge nail for asymmetry correction

Sides correction — material applied to lateral walls only, within the 1–2mm height limit

The 1–2mm Height Limit: Why It Exists

Gel material applied to a lateral wall creates a new surface that must transition smoothly into the top surface of the existing free edge. Within 1–2mm of height, this transition is gradual enough that it becomes invisible under leveling gel — the leveling gel flows over it and creates a smooth, even top surface.

Beyond 1–2mm, the transition from the added Sides material to the original free edge surface creates an abrupt change in height — a step or ridge. This ridge is visible when the nail is viewed from the front, and it catches under colour and top coat in a way that is visible in the finished result. Removing the ridge requires surface filing that removes material from the top of the free edge — altering the geometry the Sides technique was intended to correct.

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Jelly Gel vs Leveling Gel for Sides

Two gel products can be used for Sides correction in VEL Academy technique: jelly gel and leveling gel. They behave differently when applied to the lateral wall surface:

Property Jelly Gel Leveling Gel
Consistency Very fluid — flows freely Thicker — holds shape better
Self-leveling on wall Excellent — conforms to surface Moderate — requires brush smoothing
Transition to free edge Smooth — flows into transition More defined — may need smoothing
Risk of overflow onto plate Higher — monitor carefully Lower — stays where placed
VEL Academy preference Preferred when available Alternative when jelly gel unavailable

Jelly gel is preferred in VEL Academy technique because its fluid consistency produces a smoother transition at the top of the Sides layer — reducing the likelihood of a visible ridge even near the 1–2mm limit. Leveling gel works but requires more careful brush work to smooth the transition before curing.

How to Apply Sides Correction

  • Apply Sides material to the lateral wall surface only — not the top surface of the nail plate
  • Use a small brush or the corner of a leveling gel brush for precise placement
  • Stay within the 1–2mm height limit — measure visually against the existing free edge height
  • Smooth the transition at the top of the Sides layer before curing
  • Check from the front — the transition should be gradual and invisible
  • Cure and apply leveling gel over the full nail as normal

When Sides is the wrong method: if you find yourself applying Sides material above the 1–2mm limit in order to correct the asymmetry, the deformation is beyond what Sides can address. Switch to PolyGel Architecture Restoration — which is designed for this level of correction and will produce a clean result rather than a ridge that needs to be filed away.

Why this matters for client retention: clients with minor lateral asymmetry who receive correct Sides correction at every fill maintain a consistent nail shape over time. Clients who receive Sides correction beyond the height limit develop a gradual accumulation of material that requires periodic correction — and eventually, a complete rebuild. Getting the limit right from the first appointment prevents this pattern.

Frequently Asked Questions

What is the Sides gel correction technique?

Sides adds a thin layer of gel along the lateral walls of the free edge to correct minor asymmetry in the lateral parallels. It is the lightest correction method in VEL Academy technique — minimum material, minimum time, used when deformation is minimal.

Why must the Sides layer not exceed 1–2mm?

Beyond 1–2mm, the transition between Sides material and the original free edge creates a visible ridge that shows through colour and top coat. Within 1–2mm it integrates invisibly under leveling gel.

What is the difference between jelly gel and leveling gel for Sides?

Jelly gel is more fluid and self-levels more completely — it conforms to the lateral wall and produces a smoother transition with less brush work. Leveling gel is thicker, stays where placed, but requires more smoothing at the transition. VEL Academy prefers jelly gel for Sides when available.

How do you apply Sides without it flowing onto the nail plate?

Apply to the lateral wall surface only using a small brush or the corner of a leveling gel brush. Control the amount to stay within the 1–2mm limit. If product flows onto the nail plate, it has been over-applied or the consistency is too fluid for the technique.

Does Sides correction require surface filing after curing?

A correctly applied Sides layer within 1–2mm typically does not require surface filing — it integrates under leveling gel. If a visible ridge remains after curing, the Sides was at or beyond its limit for that nail.

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