C-Bright Dark Spot Corrector

C-Bright Dark Spot Corrector: brighter-looking skin, measured over eight weeks.

By SeneGence · Updated October 30, 2026

Standardized photography and ImagePro analysis documented progressive changes in facial brightness, with favorable Week 8 results for brightness, hyperpigmentation, and the appearance of dark marks following acne.

34 women8 weeksStandardized photographyImagePro analysis

5.0%

mean improvement in facial brightness

Week 8

ImagePro chroma analysis, n=34; p<0.001.

88%

of participants improved in brightness

Week 8

ImagePro analysis, n=34.

77%

improved in dark marks following acne

Week 8

Targeted subgroup, n=13; p=0.016.

Study design and limits

How this study was built, and what that means for reading its numbers.

The eight-week study was single-arm: 34 women used C-Bright, and each result is compared with that woman’s own baseline images rather than with an untreated group.
Each endpoint used its own panel. Brightness used all 34 participants, hyperpigmentation 21, and dark marks following acne 13.
Week 2 changes were not statistically significant on any endpoint; the complete time-course table shows every p-value.
The Essex Testing Clinic topline summary notes that it has undergone preliminary review by Quality Assurance.

Clinical results at a glance

C-Bright Dark Spot Corrector clinical results

In an independent study, C-Bright improved the appearance of skin brightness by 2.3% at 4 weeks. In an independent study, C-Bright improved the appearance of skin brightness by 5.0% at 8 weeks. In an independent eight-week study of 34 women using C-Bright Dark Spot Corrector, 88% showed improved skin brightness, measured by digital image analysis compared with baseline. In an independent study, C-Bright improved the appearance of hyperpigmentation by 2.6% at 4 weeks. In an independent study, C-Bright improved the appearance of hyperpigmentation by 2.5% at 8 weeks. Seventy-six percent of subjects in the C-Bright hyperpigmentation sub-panel improved at the measured endpoints. In an independent study, C-Bright improved the appearance of dark acne scars by 1.2% at 8 weeks. At week 8, 77% of participants in the dark-acne-scar sub-panel showed image-analyzed improvement in the appearance of dark acne scars with C-Bright Dark Spot Corrector. In an independent study, C-Bright evened the appearance of skin tone by 0.3% at 8 weeks. At week 8, 85% of participants showed image-analyzed improvement in the L* skin-tone endpoint with C-Bright Dark Spot Corrector. ImagePro digital image analysis, brightness and skin tone n=34; hyperpigmentation subjects 1–21 (n=21); dark acne scars subjects 22–34 (n=13).

Visible results

A complexion that looked progressively brighter with continued use.

Facial brightness - mean improvement5.0%

Week 8, n=34; p<0.001.

Hyperpigmentation appearance - mean improvement2.5%

Week 8 subgroup, n=21; p=0.021.

Dark marks following acne - mean improvement1.2%

Week 8 subgroup, n=13; p=0.016.

L* lightening effect - mean improvement0.3%

Week 8, n=34; p=0.041.

Measurement-first evidence

A trained technician captured standardized facial images at Baseline and Weeks 2, 4, and 8. ImagePro software provided instrument-based measurement of four appearance endpoints.

76%of the hyperpigmentation subpanel improved at Week 8.

85%of the full panel moved favorably on the L* endpoint at Week 8.

How to read the results

Mean improvement describes the average measured change. “Participants improved” describes how many individuals moved in the favorable direction. Both are shown without blending them.

Technical study record

Independent photographic evidence, presented with its full endpoint context.

Independent laboratoryEssex Testing Clinic

Tested productC-Bright Dark Spot Correcting Serum

Design8-week single-arm baseline comparison

Population34 women completed

Evidence methodStandardized photography + ImagePro analysis

VisitsBaseline, Week 2, Week 4, Week 8

Source recordEssex Testing Clinic topline summary

Complete ImagePro time course

Endpoint	Timepoint	Mean ± SD	Mean change	Improved	p-value
Hyperpigmentation (n=21)	Baseline	91.7 ± 31.7	-	-	-
Hyperpigmentation	Week 2	91.3 ± 31.4	-0.4%	43%	0.627
Hyperpigmentation	Week 4	94.1 ± 32.2	+2.6%	76%	0.005
Hyperpigmentation	Week 8	94.0 ± 31.5	+2.5%	76%	0.021
Dark acne-scar appearance (n=13)	Baseline	182.7 ± 9.1	-	-	-
Dark acne-scar appearance	Week 2	183.3 ± 9.3	+0.3%	62%	0.346
Dark acne-scar appearance	Week 4	182.1 ± 9.6	-0.3%	38%	0.428
Dark acne-scar appearance	Week 8	184.9 ± 10.2	+1.2%	77%	0.016
Facial brightness (n=34)	Baseline	26.2 ± 6.9	-	-	-
Facial brightness	Week 2	26.2 ± 6.8	0.0%	50%	0.780
Facial brightness	Week 4	26.8 ± 7.1	+2.3%	76%	0.001
Facial brightness	Week 8	27.5 ± 6.8	+5.0%	88%	<0.001
L* lightening endpoint (n=34)	Baseline	77.2 ± 6.0	-	-	-
L* lightening endpoint	Week 2	77.2 ± 6.1	0.0%	47%	0.973
L* lightening endpoint	Week 4	77.0 ± 6.0	-0.3%	35%	0.130
L* lightening endpoint	Week 8	77.4 ± 5.8	+0.3%	85%	0.041

Increase was defined as improvement by the source. Hyperpigmentation used Subjects 1-21; dark acne-scar appearance used Subjects 22-34; brightness and L* used all 34 participants.

Study application

Results apply to C-Bright Dark Spot Correcting Serum under the reported eight-week study design.

Independent laboratory evidence

Original source pages follow.

View the complete source record.

The complete two-page Essex laboratory summary follows.

The complete PDF pairs this consumer summary with the selected independent laboratory source pages.

Open complete laboratory report (PDF)

LaboratoryEssex Testing Clinic

Tested productC-Bright Dark Spot Correcting Serum

Pages reproducedComplete two-page topline

Independent laboratory source pages are included in the complete PDF. Participant-identifying information has been removed where indicated; aggregate findings are unchanged.

Ready for brighter, more even-looking skin? See what C-Bright Dark Spot Corrector does and choose yours, learn when to look for change, or return to all clinical results.