Melt in Your Mani on all ten nails, Merry Crunch-mas on a ring-finger accent. Service time runs roughly a standard GelColor set with one accent nail. Position this as the classic holiday package so first-time clients book without reading further.

White Choco-hot base with Choco-lotta Cheer and Peanut Butter Me Up as alternating tip or accent nails. Reads neutral enough for office parties, seasonal enough for the brief. Service time runs slightly longer due to the two-chocolate accent swap.

Red-iculously Sweet on all ten nails with Deck the Shells as a free-edge or ring-finger accent. The two shimmer finishes catch overhead lighting and read as photo-ready for social-media bookings.

The twelve shades split evenly into six cremes and six shimmers. DTK carries them as two half-kits (Kit #1 and Kit #2) or as the full twelve-shade GelColor set, so the kit grouping below mirrors the actual SKU on the shelf. Shade names and finish notes are per OPI's official product documentation.

Kit #1 · The bright half

Kit #2 · The dessert half

All twelve bottles are 15 mL / 0.5 oz. OPI rates GelColor at 30 seconds under an LED lamp and up to three weeks of wear. Buy the halves separately as Kit #1 or Kit #2, or take the full twelve-shade GelColor Set in one order.

The OPI x M&M's Duo Set carries all twelve shades in both formats: GelColor for the salon service (cured under the lamp, holds for weeks) and matching Nail Lacquer in the same color names (air-dry, used for touch-ups at home).

The client books the GelColor service and leaves with a matching Nail Lacquer bottle from the retail counter. She uses the bottle at home to touch up a chip, refresh her toes, or carry the shade onto a holiday dress. The Duo Set at $250.50 works out to $10.44 per bottle across 24 bottles (12 gel plus 12 lacquer), which supports retail counter margin without a separate lacquer order.

• Same shade name on service and retail. No shade-matching work for the technician.
• Gel for the chair, lacquer for the dresser. One brand, two formulas.
• Twelve-shade range covers every package above with retail stock remaining.

The strongest December promotions avoid steep service discounts that erode margin and instead bundle value and drive retail attachment. Four formats carry well across most salon markets.

• Late October (week of 20 Oct) · Place DTK wholesale order. Pick GelColor Set 12 plus Duo Set for retail, or two kits for a smaller salon. DTK ships in 24h from California.
• Early November (week of 3 Nov) · Receive stock, set up swatch palette. Each OPI GelColor kit ships with a blank nail palette, chain, and table top card. Apply each shade once for client browsing.
• Mid November (week of 17 Nov) · Train team on the 3 packages. Walk every technician through the shade allocation, service time estimate, and retail attachment script.
• Late November (week of 24 Nov) · Prep menu cards and signage. Print physical menu cards for the station, update the online menu, prepare social posts for the week-of-launch.
• 1 December · Launch holiday service menu. Open bookings for the three packages. Run the advent-calendar promo across the four December weeks.
• Mid December (week of 15 Dec) · Push gift certificate promo. Peak gift-giving booking window; keep certificate inventory and templates ready at the counter.

The swatch palette tool matters more than it looks. Clients who physically touch the twelve shades on a chain book their package faster than clients browsing a printed menu. The palette ships in each GelColor kit at no extra cost.