The GelBottle Clear All-In-One BIAB and Mylee 5-in-1 Builder Gel Clear solve many of the same problems, but they are not aimed at exactly the same user.
The GelBottle positions its professional products for qualified beauty professionals, while Mylee sells its 5-in-1 Builder Gel to professionals and consumers and has even included the clear version in a beginner at-home gel kit.
For a qualified nail technician already working within The GelBottle system, Clear All-In-One BIAB is the more natural professional choice. For a beginner or at-home user who wants one clear builder gel for strengthening, short extensions and nail art, Mylee 5-in-1 is significantly more accessible.
Both products can be used for strengthening overlays, both can form part of an extension service, both can be infilled, and both are described by their manufacturers as soak-off builder gels. The important differences are professional accessibility, bottle size, curing protocol, extension guidance and how each product fits into its manufacturer’s wider system.
Quick answer: The GelBottle BIAB or Mylee Builder Gel?
Choose The GelBottle Clear All-In-One BIAB if you are a qualified nail professional who wants a 20 ml, self-levelling builder gel designed around The GelBottle professional system.
Choose Mylee 5-in-1 Builder Gel Clear if you want a more accessible 15 ml builder gel with a straightforward 60-second LED cure and an explicit manufacturer specification allowing extensions up to 1 cm.
There is no responsible basis for saying that either product is universally stronger, safer or longer-lasting without testing the two products under controlled, comparable conditions. This comparison therefore distinguishes manufacturer specifications from editorial conclusions rather than presenting assumptions as measured results.
Are Mylee Builder Gel and BIAB the same thing?
No.
BIAB™ — Builder In A Bottle™ — is The GelBottle’s branded builder-gel system. Mylee 5-in-1 Builder Gel is a competing brush-on builder gel with overlapping functions; it is not a BIAB™ product.
Functionally, however, the two clear products are close enough to make a meaningful comparison. They can both reinforce natural nails, create overlays, support extension work and provide additional uses around gel colour and nail art.
The GelBottle Clear All-In-One BIAB vs Mylee 5-in-1: key differences
| Feature |  The GelBottle Clear All-In-One BIAB |
 Mylee 5-in-1 Builder Gel Clear |
|---|---|---|
| Product type | Clear All-In-One BIAB™ builder gel | Clear 5-in-1 builder gel |
| Bottle | 20 ml | 15 ml |
| Viscosity | Medium | Medium |
| Self-levelling | Yes | Self-levelling techniques supported |
| Natural-nail overlay | Yes | Yes |
| Extensions | Short-to-medium / TGB extension systems | Up to 1 cm on paper forms |
| Base function | Yes, subject to exact regional formulation | Yes |
| Top function | Clear version can perform this role | Yes |
| Nail-art encapsulation | Yes | Yes |
| LED protocol | 99 sec Low Heat Mode in TGB guidance | 60 sec |
| Removal | Soak-off / infill | Soak-off / infill |
| Published wear claim used here | No directly comparable claim used | Up to 3 weeks |
| Target user | Qualified professional | Professionals and consumers |
The GelBottle bottle contains 5 ml more product: 20 ml versus 15 ml, which means approximately 33% more volume than the Mylee bottle. This does not automatically make it better value because prices differ between countries and suppliers.
Professional use and accessibility
The GelBottle Clear All-In-One BIAB
One of the biggest differences is not technical at all.
The GelBottle explicitly states that its professional products are sold to qualified beauty professionals, and its terms require customers purchasing professional products to confirm professional training.
That matters when somebody searches for phrases such as “Mylee vs BIAB for beginners” or “best builder gel for home use”.
Clear All-In-One BIAB should not simply be treated as another DIY gel option. The brand positions BIAB as a professional treatment system.
For nail technicians, that can be a benefit. The product sits within a wider professional ecosystem of training, lamps, BIAB techniques and The GelBottle extension systems.
Mylee 5-in-1 Builder Gel Clear
Mylee deliberately targets a broader audience.
Its Clear 5-in-1 Builder Gel is sold directly to consumers, and Mylee has included the 15 ml product in a kit specifically described as suitable for beginners wanting to create gel manicures at home.
That makes Mylee the much clearer choice for the DIY user.
It does not mean building a correct apex or extension suddenly becomes effortless. Builder gel remains technique-dependent. But Mylee removes the professional-access barrier and supplies instructions written for people learning the process themselves.
Consistency and self-levelling
The GelBottle
The GelBottle describes All-In-One BIAB as a medium-viscosity, self-levelling builder gel. Its consistency is designed to allow the product to level while still providing enough structure for overlays.
For an experienced technician, this can reduce the amount of refinement required after application.
“Self-levelling” should not, however, be confused with “self-structuring”. Product quantity, apex placement, cuticle control and correct curing still determine the final structure.
Mylee
Mylee also places Clear 5-in-1 in the medium-viscosity part of its builder range.
Its application advice describes creating a slip layer, adding builder gel for structure and briefly turning the hand upside down to encourage the material to self-level into an apex.
So in terms of the basic application concept, these products are actually closer than their branding initially suggests.
Mylee also gives an important warning: building with a thicker floated layer may create a heat spike during curing.
Strengthening natural nails
The GelBottle
Strengthening natural nails is a central use case for All-In-One BIAB.
The GelBottle describes the formula as suitable for building strong overlays and creating a protective strengthening barrier over the natural nail.
The larger 20 ml bottle may also be attractive in a salon environment where builder gel is used repeatedly across many appointments.
Mylee
Mylee similarly positions Clear 5-in-1 as a strengthening product.
Its current instructions recommend applying several thin layers when additional reinforcement is required, curing every layer individually. The product can subsequently be infilled as the natural nail grows.
For someone primarily interested in strengthening natural nails rather than creating long extensions, both products match the use case well on paper.
There is not enough independent head-to-head evidence to declare a strength winner.
Extensions
This is where Mylee provides the clearer numerical specification.
The GelBottle
The GelBottle states that All-In-One BIAB can be used for short-to-medium extensions using sculpting forms. It is also integrated into the brand’s DesignEx Pro™ extension system.
The manufacturer does not provide the same simple centimetre figure in the cited All-In-One documentation.
That means it would be wrong to invent an exact maximum extension length merely to make the comparison table look symmetrical.
Mylee
Mylee explicitly states that Clear 5-in-1 Builder Gel can be used with paper forms to extend nails up to 1 cm.
The manufacturer instructs users to build the extension in layers and cure each layer for 60 seconds under an appropriate Mylee LED lamp.
Therefore:
Best documented option for a clearly specified short sculpted extension: Mylee 5-in-1 Builder Gel Clear.
That does not demonstrate that Mylee is structurally stronger. It simply has the more explicit published extension-length specification.
Base coat, builder gel and top coat
Both products are deliberately multifunctional.
The GelBottle
The standard All-In-One BIAB guidance describes primer/base functionality within the system as well as builder-gel use. Clear All-In-One BIAB can additionally be used for encapsulation and as a top layer when applied according to TGB instructions.
This is particularly useful for clear structural applications and nail art.
There is an important global-market caveat, however. The GelBottle has reformulated products and publishes separate current and historic safety documentation. Ingredient and base-system assumptions should therefore be checked against the exact product sold in a particular market.
Mylee
Mylee’s “5-in-1” name also reflects genuine multiple uses.
The manufacturer describes the clear product for:
- base-coat use,
- top-coat use,
- strengthening overlays,
- extensions,
- attaching gems and jewels,
- encapsulating glitter and decorations.
Interestingly, Mylee’s normal manicure workflow still often recommends finishing with a separate Top Coat even though the clear builder itself can perform that function.
So “5-in-1” means the product is capable of several jobs, not necessarily that every manicure should consist of this bottle alone.
Curing time
The GelBottle
The GelBottle’s BIAB application guidance uses a 99-second Low Heat Mode cure with the TGB Light The Way lamp for builder layers.
For an existing TGB salon this is simply part of the system.
From the point of view of somebody comparing published curing times, however, it is longer than Mylee’s standard LED cycle.
Mylee
Mylee specifies 60 seconds under an LED lamp for Clear 5-in-1 Builder Gel and 120 seconds under UV in its current guidance.
That gives Mylee a very simple and clearly communicated curing protocol.
But cure duration should never be used as shorthand for quality. Different formulas, photoinitiators, product thicknesses and lamps require different curing systems.
Removal and infills
There is effectively a draw here.
The GelBottle
All-In-One BIAB is described as a soak-off formula that can be removed using acetone and can also be maintained through infills.
This needs to be distinguished from other BIAB formulations because not every product bearing BIAB branding necessarily shares identical removal instructions.
Mylee
Mylee also describes its Clear 5-in-1 Builder Gel as a soak-off product and explicitly discusses infilling growth instead of completely removing the manicure every time.
So if soak-off removal and infills are the deciding factors, neither product has a clear specification advantage.
Which lasts longer?
Mylee states that its Clear 5-in-1 Builder Gel can deliver up to three weeks of wear when correctly applied.
For this comparison, we have deliberately not converted The GelBottle’s general BIAB durability messaging into an invented directly comparable number.
To say:
“BIAB lasts longer than Mylee”
or:
“Mylee lasts longer than BIAB”
would require comparable testing involving the same nail conditions, preparation, product thickness, curing equipment, application quality and lifestyle exposure.
We do not have that test.
Therefore there is no evidence-based durability winner in this comparison.
The GelBottle Clear All-In-One BIAB: advantages
Larger 20 ml bottle. It contains 5 ml more product than the Mylee bottle.
Professional system positioning. It is designed for qualified nail professionals and sits within The GelBottle’s wider BIAB system.
Medium-viscosity, self-levelling formula. This is specifically documented by The GelBottle.
Multiple functions. It can support overlays, base use, structural builder work and clear top/encapsulation applications.
Extension-system integration. It is compatible with The GelBottle’s DesignEx Pro™ workflow.
Soak-off and infill options. Complete removal is not required for every maintenance appointment.
The GelBottle Clear All-In-One BIAB: disadvantages
It is not intended as a normal DIY retail product. The GelBottle restricts its professional products to qualified beauty professionals.
Longer published LED cycle. The TGB BIAB routine uses 99 seconds on Low Heat Mode compared with Mylee’s 60-second published LED cure.
Regional formulation needs checking. Current and historic TGB documentation reflects reformulations, so ingredient and base-system comparisons need to refer to the exact bottle being sold locally.
Less straightforward extension specification for comparison shoppers. The manufacturer describes suitable extension types rather than giving the simple “up to 1 cm” statement published by Mylee.
Mylee 5-in-1 Builder Gel Clear: advantages
Accessible to beginners and home users. Mylee has included the exact Clear 5-in-1 product in an at-home beginner kit.
Very broad multi-use specification. It can function as a base, top, strengthening overlay, short-extension gel and nail-art encapsulation product.
Explicit extension limit. Mylee states that extensions of up to 1 cm can be created using paper forms.
Straightforward 60-second LED cure. The curing instructions are simple and consistently communicated.
Published wear claim. Mylee states up to three weeks when correctly applied.
Soak-off and infill capability. Users can maintain growth rather than removing every set completely.
Mylee 5-in-1 Builder Gel Clear: disadvantages
Smaller bottle. At 15 ml, it contains 25% less product than the 20 ml TGB bottle.
Beginner-friendly positioning does not remove the learning curve. Building an apex or structurally correct extension still requires product control.
Heat spikes remain possible. Mylee itself cautions that floating a thicker layer can produce a heat spike during curing.
A separate top coat may still be preferable. Although Clear 5-in-1 can act as a top, Mylee’s standard application routine frequently finishes with a dedicated Top Coat.
It does not offer the same professional-only ecosystem positioning as The GelBottle or direct DesignEx Pro™ integration.
Verdict: which should you choose?
There is no universal winner because these two clear builder gels serve overlapping purposes but different buying contexts.
Choose The GelBottle Clear All-In-One BIAB if:
You are a qualified nail technician, already use or want to use The GelBottle professional system, value the larger 20 ml bottle and want a builder gel integrated into BIAB and DesignEx Pro™ services.
For that user, The GelBottle Clear All-In-One BIAB is our preferred option.
Choose Mylee 5-in-1 Builder Gel Clear if:
You are a beginner, at-home gel user or simply want a widely accessible clear builder gel with extremely straightforward specifications: 15 ml, 60-second LED cure, multiple functions and extensions up to 1 cm.
For that user, Mylee 5-in-1 Builder Gel Clear is the more appropriate choice.
Final recommendation
For professional salon use: The GelBottle Clear All-In-One BIAB.
For beginners and at-home use: Mylee 5-in-1 Builder Gel Clear.
For the clearest published short-extension specification: Mylee.
For a larger bottle and integration with a professional BIAB system: The GelBottle.
Neither product wins our durability comparison because no controlled head-to-head wear test was available. That distinction is important: this verdict is based on documented suitability and specifications, not an invented performance test.
Frequently asked questions
Is Mylee Builder Gel the same as BIAB?
No. BIAB™ is The GelBottle’s branded Builder In A Bottle™ system. Mylee produces a competing builder gel with several similar applications.
Can Mylee 5-in-1 Builder Gel extend nails?
Yes. Mylee states that the Clear version can create extensions up to 1 cm using paper forms.
Can The GelBottle Clear All-In-One BIAB extend nails?
Yes. The GelBottle describes All-In-One BIAB as suitable for short-to-medium extensions and use within its DesignEx Pro™ system.
Which is better for beginners?
Mylee is the more appropriate option because it is sold to consumers and appears in Mylee’s beginner at-home kits. The GelBottle restricts its professional range to qualified professionals.
Can both products soak off?
Yes, according to manufacturer guidance for these specific products.
Which cures faster?
Mylee has the shorter published standard LED cycle: 60 seconds compared with The GelBottle’s 99-second Low Heat Mode BIAB guidance.
Can both be used as a top coat?
The clear products can both perform top/encapsulation functions according to their respective manufacturer guidance, although the brands’ normal finishing routines differ.
Which bottle is bigger?
The GelBottle Clear All-In-One BIAB is 20 ml; Mylee Clear 5-in-1 is 15 ml.
Which lasts longer?
Mylee publishes an up-to-three-weeks claim. We do not have a controlled direct comparison that would justify declaring either product the longer-lasting option.
Can the formulation vary between markets?
Products can be reformulated, and current instructions and safety documentation should always be checked for the exact SKU and country in which it is sold. The GelBottle, for example, maintains documentation distinguishing older and reformulated products.