BIAB vs Shellac: Which Nail Service Is Right for You?

If you've walked into a nail salon lately and felt overwhelmed by the options — BIAB, Shellac, Builder Gel, SNS — you're not alone. Two of the most popular services we offer at Polishiique are BIAB (Builder In A Bottle) and Shellac, and clients ask us to compare them almost every day. So here's the honest, no-fluff guide to help you choose.

What is Shellac?

Shellac is a hybrid gel-polish formula — thinner than a builder gel but thicker than regular nail polish. It's painted onto your natural nail in layers and cured under a UV/LED lamp. The result is a high-gloss, chip-resistant finish that lasts up to 3 weeks.

At Polishique, we use a HEMA-free Shellac formula, which means it's gentler on sensitive nails without any compromise on colour or wear time. It's a great option if your natural nails are in good condition, you want a wide range of colour choices, and you prefer a thinner, more natural feel.

What is BIAB?

BIAB stands for Builder In A Bottle. It's a thicker, structural gel that sits between regular gel polish and hard gel extensions. Unlike Shellac, BIAB actually builds a protective overlay over your natural nail — strengthening it, adding structure, and allowing your nail to grow underneath without breaking.

BIAB has exploded in popularity across Australia over the last two years, and for good reason. It's ideal if your nails are brittle, weak, or prone to breaking, you want your nails to grow longer and stronger, or you want results that last 3–4 weeks rather than 2–3.

BIAB vs Shellac: Side by Side

Durability: BIAB wins — it lasts 3–4 weeks vs Shellac's 2–3 weeks.

Nail health: BIAB wins — it strengthens and protects natural nails.

Finish: Shellac wins — thinner, more natural feel on the nail.

Colour range: Both offer a wide range of shades.

Price: Shellac is generally more affordable. At Polishique, Shellac starts from $35 and BIAB starts from $65.

Best for: Shellac suits healthy nails wanting a glossy finish. BIAB suits anyone wanting stronger, longer-lasting nails.

Which should you choose?

If your nails are healthy and you just want beautiful colour that lasts — Shellac is perfect. If you've struggled with breaking, peeling, or weak nails — BIAB is a game changer. Many of our clients at Polishique start with Shellac and switch to BIAB after seeing how much stronger their nails become after a few sets.

Not sure? Come in and chat with one of our nail artists. We'll look at your nails and recommend the best option for you.

Book your appointment at Polishique in Peakhurst, Sydney — online via our website or call us on (02) 9538 6872.