KUNDAL Serums

KUNDAL's Ultra Hair Serum line covers 14+ Korean hair serums in 100ml bottles, each in a distinct fragrance: Ylang-Ylang, Blackberry Bay, Ember Vanilla, White Mask, Baby Powder, Clean Soap, Cherry Blossom, Acacia Moringa, Cleansop, and an unscented base. These leave-in serums coat the hair shaft to reduce frizz, add shine, and protect against heat. Each scent is designed to last several hours after application.

  • Korean leave-in hair serum
  • 10 fragrance variants in 100ml
  • Frizz control & heat protection
  • 14+ serums in stock

By Skinsli editorial Updated

Buying guide

KUNDAL Ultra Hair Serum: Fragrance Variants, Application, and Choosing the Right Scent

KUNDAL's Ultra Hair Serum is a Korean leave-in hair treatment serum that combines frizz control, shine enhancement, and heat protection in a 100ml bottle. The collection currently offers 14+ variants, each sharing the same serum base but distinguished by a specific fragrance - from Ylang-Ylang and Cherry Blossom to Blackberry Bay and Ember Vanilla. This guide explains how the serum works, how the fragrance variants compare, who the product suits, and how to use it.

What a hair serum does vs. a hair oil or conditioner

A hair serum is a lightweight silicone or oil-based leave-in product applied after washing and before heat styling or air drying. Unlike a rinse-off conditioner, it stays in the hair and forms a thin protective coating on the hair shaft. This coating reduces friction between strands (which causes frizz and breakage), adds surface shine by reflecting light more evenly, and creates a heat-protective layer that reduces damage from blow-dryers and flat irons.

KUNDAL's Ultra Hair Serum is water-based rather than pure silicone, which makes it lighter on the hair - less prone to build-up than heavier oil-based serums. It is suitable for everyday use without weighing the hair down, particularly on fine to medium-texture hair.

The ten fragrance variants and their scent characters

Each variant uses a different fragrance profile while the functional serum base remains consistent. Ylang-Ylang is a rich, tropical floral - the most intense scent in the line. Cherry Blossom is a delicate, light spring floral with a slightly sweet edge. Acacia Moringa is a clean green-floral blend. Blackberry Bay is a fruity-woody combination with a fresh, slightly tart top note. Ember Vanilla is warm, sweet, and amber-forward - the most gourmand option in the collection.

White Mask has a clean, linen-like freshness. Baby Powder is a soft, powdery warmth. Clean Soap reads as a clean, fresh-washed scent. Cleansop is a light, clean variant with minimal fragrance. The base formula without added fragrance is the most neutral option. All variants are designed so the scent lasts a few hours on dry hair rather than fading immediately after application.

How to apply KUNDAL Ultra Hair Serum correctly

Apply to damp hair after washing and towel-drying. Dispense a small amount - one to two pumps for short to medium hair, two to three pumps for long or thick hair - onto the palm. Rub palms together and work through the mid-lengths and ends of the hair, avoiding the scalp and roots. Applying at the roots causes the scalp area to look oily more quickly without adding any benefit, since the roots are newer and stronger hair that needs less treatment.

After applying, either blow-dry or air-dry as normal. The serum works in both cases but provides more noticeable heat protection when used before blow-drying or heat styling. Do not apply too much - over-application leaves the hair looking greasy rather than smooth.

Which hair types benefit most

Fine hair: use one pump maximum and work it only into the very ends. Fine hair is more prone to becoming weighed down by serums, so using a small amount and concentrating it at the tips keeps it looking light rather than flat. Medium-thickness hair is the sweet spot for the KUNDAL Ultra Hair Serum - one to two pumps covers the mid-lengths and ends without heaviness. Thick or coarse hair benefits from two to three pumps but may find the serum lighter than needed for severe frizz control, in which case a heavier hair oil layered on top of the serum gives more control.

Chemically treated or color-damaged hair benefits from the protective coating the serum provides. The thin film over each strand reduces further mechanical and heat damage on hair that is already weakened by processing.

Heat protection: what to expect from the KUNDAL Ultra Hair Serum

The KUNDAL Ultra Hair Serum provides a degree of heat protection when used before blow-drying or styling with a flat iron or curling wand. The film the serum deposits on the hair shaft reduces direct heat contact with the hair cuticle. This is not the same as a dedicated high-heat thermal protectant rated for specific temperatures - for very high heat (above 200°C) or frequent daily heat styling, a stronger dedicated thermal spray may be needed. For moderate blow-drying and occasional heat styling, the Ultra Hair Serum provides meaningful everyday protection alongside its frizz and shine benefits.

How to choose between the fragrance variants

The functional result is identical across all fragrance variants. Choosing comes down to personal scent preference and how long you want the fragrance on your hair. If you want a noticeable hair scent that lasts several hours: Ylang-Ylang, Ember Vanilla, or Cherry Blossom. If you want a lighter, background scent: White Mask, Clean Soap, or Cleansop. For a warm, sweet character: Ember Vanilla or Baby Powder. For fresh or fruity: Blackberry Bay or Acacia Moringa. For the least scent: the base unscented formula.

Buying a second or third variant to rotate is straightforward since the 100ml size is compact enough to keep multiple bottles without taking up much space.

The 100ml size and how long it lasts

All KUNDAL Ultra Hair Serum variants come in 100ml. At one to two pumps per use with daily application, a 100ml bottle lasts approximately two to three months for most users. For very thick or long hair using two to three pumps, it lasts closer to five to six weeks. The compact size makes it easy to store and travel with; a TSA-compliant volume at 100ml means it qualifies as carry-on liquid in most travel contexts.

FAQ

Frequently asked questions

  • Hair. The KUNDAL Ultra Hair Serum is a leave-in hair treatment serum applied to damp hair after washing. It controls frizz, adds shine, and provides everyday heat protection. It is not a facial serum.

  • Ylang-Ylang is considerably more intense - a rich, tropical floral that lasts several hours on hair. Cherry Blossom is lighter and more delicate, with a subtly sweet spring floral character. If you are sensitive to strong scents or prefer hair fragrance in the background rather than as a statement, Cherry Blossom or Acacia Moringa is the better starting point than Ylang-Ylang.

  • Ember Vanilla is the warmest, most gourmand scent in the KUNDAL Ultra Hair Serum line - amber-forward with a sweet vanilla character. It is the best choice if you want a cozy, warm hair fragrance that reads as more sophisticated than a simple vanilla.

  • Damp hair after towel-drying - not soaking wet and not fully dry. Damp hair absorbs the serum more evenly than fully wet hair, and applying before it dries allows the serum to spread through the strands. Apply from mid-length to ends and avoid the roots and scalp.

  • One pump maximum for fine hair, worked only into the ends. Fine hair is more prone to being weighed down by serums - less is more. Start with half a pump if your hair is very fine or short, and increase only if needed. Concentrate the product at the tips rather than the mid-lengths for fine hair.

  • It provides everyday heat protection for moderate blow-drying and occasional styling. The serum coating reduces heat contact with the hair cuticle. For very high heat above 200°C or daily heat styling sessions, a dedicated thermal protectant spray rated for that temperature is a safer main line of protection - use the Ultra Hair Serum alongside it rather than as a replacement.

  • At one to two pumps per daily use, the 100ml bottle lasts two to three months for most users. Thick or long hair using two to three pumps will go through it in five to six weeks. All variants are 100ml, which also qualifies as carry-on size in most airlines.

  • Yes. All KUNDAL products in this collection on skinsli are authenticated inventory from the Korean brand, sourced through verified supply channels. The 14+ Ultra Hair Serum variants are genuine KUNDAL formulations.