Skip to main content
    Alix Lasers

    Alix Knowledge

    Picosecond vs Nanosecond Lasers: Which Technology is Better?

    Since the arrival of picosecond lasers on the market, Q-switched (nanosecond) technology is often framed as outdated. However, the comparison is more nuanced than marketing claims might suggest.

    Comparison 7 min readPublished:

    The Photoacoustic Effect

    Picosecond pulses (10⁻¹² s) generate a significantly stronger photoacoustic effect compared to nanosecond pulses (10⁻⁹ s). The pigment is shattered into much finer particles, allowing the lymphatic system to transport them away more efficiently.

    Treatment Sessions, Colors, and Risks

    • Sessions: Picosecond requires 4–8, Nanosecond requires 8–15 for comparable results.
    • Colored tattoos (green, blue, red): Picosecond is clearly superior.
    • Risk of scarring / hypopigmentation: Lower with picosecond technology.
    • Cost per session: Picosecond is 20–40% higher – but requires fewer total sessions.

    FAQ

    Frequently asked questions

    Will every tattoo disappear completely?

    Black tattoos are usually removed completely. Green and yellow pigments often remain as a faint shadow.

    How long should I wait between sessions?

    At least 6–8 weeks, to allow the lymphatic system sufficient time to transport the particles away.

    Matching systems from the ALIX range

    Continue reading