Does SUNEKOS really work? Expectations based on research and what remains unclear

Injections of unlinked hyaluronic acid of the same type into the skin have been reported to improve hydration and elasticity[1][2]. However, changes diminish over time, and we found no research examining the SUNEKOS product itself[1]. For this reason, we present the expected range and limitations based on research of similar types of injections.

What changes have been reported in research?

The main changes reported are improvements in skin hydration, elasticity, and fine lines[2]. The method of injecting hyaluronic acid into the skin has been established by many researchers to have effects on wrinkles and skin rejuvenation, as well as safety[2].

Guidelines from the Japanese Association of Plastic Surgeons also state that hyaluronic acid injection is effective for facial wrinkle treatment[3]. However, the strength of recommendation is "weakly recommended," not a basis for strong endorsement[3].

What did research on injections around the eyes reveal?

Around the eyes, there is research comparing different injections on each side of the face[1]. In 27 people, unlinked hyaluronic acid was injected on one side and a different ingredient (polynucleotide) on the other side, three times at two-week intervals[1].

Evaluation of visible improvement showed no major difference between the two injections[1]. Improvements in skin elasticity and hydration diminished over time on both sides[1]. In other words, it is unlikely that changes from a single course continue indefinitely.

Does adding amino acids make it more effective?

Whether adding amino acids increases effectiveness is unclear from this research. In the research summary, it is stated that good results were seen in skin firmness and rejuvenation when hyaluronic acid was used alone or in combination with other ingredients[2].

However, we found no research directly comparing SUNEKOS to determine which ingredient combinations provide what additional benefit. Regarding claims that "it works especially well because it contains amino acids," ask for the evidence.

What about side effects? What are the limits?

Most side effects are mild and resolve naturally. In research on filler injections around the eyes, 90% of side effects were mild and resolved naturally within one month[4].

On the other hand, delayed swelling specific to the eye area was reported in 11% of people[4]. Though rare, complications such as vascular occlusion causing vision impairment, nodules, and asymmetry have been reported[5][6]. Guidelines from the association also warn that if the product accidentally enters a blood vessel, skin necrosis or blindness may occur[3].

How do I decide if this is right for me?

Determining whether SUNEKOS is a good fit becomes easier when considering the type of concern.

Good fit: Fine lines around the eyes or addressing dryness[1][2]

Manage expectations: Changes tend to diminish over time[1]

Compare alternatives: For concerns where volume is desired, such as under-eye hollowness[5]

Ask in advance: What follow-up care and management are available if side effects occur[3][4]

Whether a skin-quality-improving injection like SUNEKOS suits your skin concerns cannot be decided from an article alone. During your consultation, have your concern evaluated to determine whether it is fine lines or hollowness, and discuss the number of sessions and ongoing plan with your doctor.