DND HEMA & TPO Free Gel Duo 203 Seahorse Sensei
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DND 203 Seahorse Sensei is a warm purple from DND's HEMA & TPO Free line. You get the gel polish and its matching lacquer, so a gel manicure and a lacquer pedicure come out the same colour.
In DND's words: Wise beyond its waves, this light lilac has mastered the art of drifting gracefully through any situation the current may pull in.
What you get
- 1 x DND 203 Seahorse Sensei gel polish, 0.5 fl oz (15 mL), cured under an LED or UV lamp
- 1 x DND 203 Seahorse Sensei nail lacquer, 0.5 fl oz (15 mL), air-dries
Why techs stock it
- TPO free: TPO is the photoinitiator the EU removed from cosmetics in 2025; this formula does not use it.
- Rated for 21 days: DND lists up to 21 days of chip-free wear with proper prep.
- Does not shrink: DND lists the HEMA & TPO Free formula as non-shrinking and chip-free.
- Clean cream finish: no shimmer or glitter, so it reads the same under salon light and daylight.
Specifications
| Brand | DND (Daisy Nail Design) |
|---|---|
| Line | DND HEMA & TPO Free |
| Shade number | 203 |
| Shade name | Seahorse Sensei |
| Colour family | Purple |
| Tone | warm purple |
| Finish | Cream |
| Format | gel polish + matching nail lacquer |
| Bottle size | 0.5 fl oz (15 mL) |
| Gel cure | 45 seconds under LED, about 2 minutes under UV per colour coat |
| Base and top | any DND, DC or DIVA base and no-wipe top gel |
| Formula | HEMA free, TPO free, vegan, cruelty-free |
| Removal | soak-off with acetone |
| SKU | DNDHFGL203 |
How to apply the gel
- Prep: clean the nail, push back the cuticle, buff off the shine and dehydrate.
- Base: a thin layer of any DND, DC or DIVA base gel, cured 30 seconds under LED.
- Colour: two thin coats of DND 203 Seahorse Sensei, each cured 45 seconds under LED, edge capped.
- Top: a DND, DC or DIVA no-wipe top gel, cured 45 seconds.
Who it suits
- Evening sets: purple carries red and blue pigment, so it shifts between salon light and daylight.
- Fall bookings, paired with a soft pink base.
- Clients who ask for warm purple by name or by number 203.
Which option to choose
Compared with a standard DND duo, DND 203 Seahorse Sensei swaps in a formula without HEMA or TPO while keeping the same gel and lacquer format. It still works with the DND, DC and DIVA base and top gels you already stock.
Thin coats win
Most chipping comes from one heavy coat that never cured all the way through. Two thin coats of 203 wear longer than one thick one.
More to pair with Seahorse Sensei: the DND HEMA & TPO Free collection, HEMA-free purple shades and the Part 06 I'm The Captain Now set.
Frequently Asked Questions
Does the lacquer match the gel exactly?+
Yes. DND mixes DND 203 Seahorse Sensei as a gel and a lacquer with the same shade number, so a gel manicure and a lacquer pedicure match. The lacquer air-dries, the gel needs an LED or UV lamp.
What do HEMA free and TPO free mean?+
HEMA is a monomer and the ingredient most linked to allergic reactions from gel polish. TPO is a photoinitiator the EU removed from cosmetics in 2025. This DND line is made without either one.
What colour is Seahorse Sensei?+
DND 203 Seahorse Sensei is a warm purple. Screens show colour differently, so check a swatch stick against the client's skin before the full set.
How long do I cure each coat?+
Under an LED lamp, cure each thin colour coat 45 seconds; a UV lamp takes about 2 minutes. Thin coats cure all the way through, thick ones do not.

