Laser tattoo removal: understanding photoacoustics

Laser tattoo removal rests on precise physical principles that are often little known to the public. Among them, the photoacoustic effect is the cornerstone of the process of fading a tattoo without damaging the skin.

At Ray studios, we use latest generation lasers built around this phenomenon, to deliver safe, effective results that respect your skin. Here is what you need to understand about the fundamental role of photoacoustics in laser tattoo removal.

What is the photoacoustic effect?

The photoacoustic effect is a physical phenomenon that occurs when an ultra-short pulse of light (such as the pulse from a picosecond laser):

• Penetrates the skin.
• Is selectively absorbed by the tattoo pigments.
• Creates a mechanical shock wave, without generating excessive heat.

This shock wave breaks the ink particles into micro-fragments, which the body then clears naturally through the lymphatic system.

Contrary to popular belief, the laser does not burn: it acts mechanically on the ink rather than thermally.

Why is photoacoustics essential in tattoo removal?

• Less heat generated: reduces the risk of burns, scarring and loss of pigment.
• Ultra-fine fragmentation of the pigments: makes it easier for the body to clear them.
• More targeted treatment: preserves the surrounding skin tissue.

Thanks to the photoacoustic effect, tattoo removal has become safer, faster and better tolerated. Individual results vary.

How does the process actually work?

1. The laser emits an ultra-short pulse (picosecond).
2. The pigment absorbs the light energy.
3. A mechanical pressure wave is generated at the pigment itself.
4. The pigment shatters into tiny particles without heating the skin.
5. The immune system gradually clears the fragments.

At Ray studios, skin therapists adjust the laser settings precisely to optimise this effect while keeping your skin safe.

Why are picosecond lasers the best way to use photoacoustics?

• Ultra-fast pulse duration: ideal for creating a powerful shock wave without a thermal effect.
• High precision: makes it possible to target pigments even when they sit deep in the skin.
• Versatility across all tattoo colours, including the most difficult ones (greens, light blues).

That is why Ray studios has chosen to work exclusively with picosecond lasers for its tattoo removal protocols.

Key points

The success of laser tattoo removal depends above all on mastering the photoacoustic effect. This is the advanced technology that makes it possible to fade a tattoo effectively while respecting your skin.

At Ray studios, skin therapists use this technology to the full to deliver visible, gradual and safe results. Individual results vary.