Vegan Tattoo Inks:
What They Are and Why It Matters

Most people choosing a tattoo studio have never thought about what's actually in the ink. That's understandable — the focus is on the design, the artist, the placement. But if you care about what goes into your body, the ingredients in tattoo inks are worth knowing about.

We're going to be specific. This is what conventional inks often contain, what vegan inks use instead, and why Thundercat made this a formal, accredited position rather than a casual afterthought.

What Makes an Ink Non-Vegan

Conventional tattoo inks frequently contain animal-derived ingredients — in some cases as primary components, in others as processing aids that end up in the final product. The main ones:

• Bone char. Used to produce the deepest blacks. Bone char is charred animal bone — typically from cattle — processed into a pigment base. It's been the standard for high-contrast black ink for decades and is still common.
• Shellac. A resin secreted by the lac insect, used as a binding agent in some formulations. You'll also find it in cosmetics, food glazing, and wood finishes. In ink, it improves viscosity and consistency.
• Glycerin from animal fat. Glycerin acts as a humectant and carrier, keeping the ink workable and fluid during application. The default source has historically been rendered animal fat, though synthetic and plant-based versions exist.
• Gelatin. Derived from animal collagen — typically bovine or porcine — sometimes used as a stabiliser in pigment suspension.

None of these are disclosed on packaging in any standardised way. Most clients have no idea they're present.

What Vegan Inks Use Instead

The vegan alternatives are functionally equivalent replacements:

• Carbon black. Carbon-based pigment derived from the incomplete combustion of hydrocarbons. Produces true, deep black without any animal-derived source.
• Plant-based glycerin. Derived from vegetable oils — most commonly palm or soy. Identical function to animal-derived glycerin, no animal involvement.
• Synthetic binders and stabilisers. Modern synthetic chemistry provides adequate alternatives to shellac and gelatin for viscosity and pigment suspension.

Do Vegan Inks Perform Differently?

This is the practical question. The honest answer: the current generation of vegan inks performs equivalently to conventional inks in application, healing, and longevity.

That wasn't always the case. Earlier vegan formulations — roughly pre-2015 — had real consistency issues: pigment suspension that would separate, viscosity that varied between batches, colours that didn't hold saturation as reliably. Artists who worked with them during that period have legitimate memories of the limitations.

The current generation is different. Brands like Eternal, Intenze, and Dynamic have invested seriously in vegan formulations and these are now industry standard across high-quality studios globally. Thundercat artists use them daily across every style we offer — fine line, realism, blackwork, ornamental — and the results speak in our healed work.

Your tattoo will look the same, heal the same, and last the same. The only difference is what went into making the ink.

Thundercat's Accreditation

Thundercat Tattoo Studio is fully accredited by the Vegan Society. This is an active position — not a marketing claim, not a casual "we try to use vegan products where possible."

The Vegan Society accreditation process involves verifying that all products used meet their standards. We went through that process deliberately and formally because we wanted the claim to be verifiable rather than just stated. If a client asks whether our inks are genuinely vegan and cruelty-free — the answer is yes, and there's an independent body that has verified it.

The studio made this switch as a complete transition. There is no session type, no style, no circumstance in which we revert to conventional inks. It's the baseline, for everyone.

Single-Use Needles and Why It Matters More Than You Think

Vegan inks are one half of the quality-consumables story at Thundercat. The other half is needles — and it's worth understanding why this matters both for quality and for how your session actually feels.

Every needle used at Thundercat is single-use, sterile, and opened in front of you at the start of your session. This is a non-negotiable hygiene baseline. But there's a quality dimension to it that doesn't get talked about enough: needle sharpness degrades with use.

A fresh, high-quality needle has a precise tip that punctures the skin cleanly, deposits ink accurately, and creates minimal trauma to the surrounding tissue. As a needle is used over the course of a session, the tip degrades microscopically — it becomes less precise, requiring more pressure to achieve the same result, and causing more disruption to the skin with each pass.

We use premium needles — the same commitment to quality that applies to our inks. Not because clients ask about it (most don't), but because it directly affects three things: how much the session hurts, how cleanly the ink settles, and how consistently the work heals. Better needles produce better results. Better results are what we're here for.

Combined, the inks and needles mean this: everything that goes into your body during a session at Thundercat — every pigment, every puncture — is the highest quality available, non-toxic, and chosen for what it produces in the work. Not for what it saves on the supply order.

What It Means for Your Tattoo

Practically: nothing changes. You don't need to be vegan to benefit from or care about this. A growing number of clients — regardless of their diet or lifestyle — care about what ingredients are used in products applied to their body. Animal welfare, clean sourcing, and verified ethical supply chains are relevant concerns for people who wouldn't describe themselves as vegan.

For clients who are vegan, it removes a genuine concern that many have quietly carried: whether the tattoo they're getting aligns with their values. It does. Fully.

For everyone else: the ink in your tattoo will look the same, perform the same, and last the same as conventional formulations. You're getting the same outcome with better sourcing behind it.