Skin Correction Disappearing Issue Guide

Intermittent deactivation of skin correction effect in bright skin tone environments

1.Overview of the Issue

In some user environments, the “Face Effect > Skin” correction feature in Prism Lens may intermittently deactivate or become unstable during use.

• This occurs mainly among users with bright skin tones or when using strong white lighting conditions.

• The issue appears as the skin correction effect being properly applied at first, but suddenly disappearing or becoming inconsistent after a certain period.

• It can also occur after minor facial movements such as smiling or turning the head, even if the video scene itself is relatively static (e.g. game screen not changing).

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2.Cause

The Skin Correction function in Prism Lens uses a color-based skin detection algorithm that identifies and smooths skin tones in real time. The current version of this algorithm is optimized for medium (yellowish) skin tones, and thus may have the following limitations under certain conditions:

• Skin areas that are too bright may not be recognized properly, causing the correction effect to be disabled intermittently.

• Under strong or high color-temperature lighting (especially white or cool blue lights), the accuracy of skin tone detection may decrease.

• Subtle facial expressions or head movements may momentarily move the detected skin region out of range, temporarily disabling the effect.

As a result, this phenomenon may occur during live streaming even when the lighting and camera remain unchanged. It tends to appear more frequently under bright lighting or static screen conditions.

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3.Temporary Workarounds and Recommendations

Until the algorithm update is released, the following methods can help mitigate or reduce the issue:

(1) Optimize Lighting Environment

• Use warm-tone lighting to improve detection accuracy and maintain a stable correction effect.

• Avoid using strong white or cool blue lights, as they can cause recognition errors.

• Adjust lighting so that there is not a large brightness difference between your face and background.

(2) Utilize Makeup Effects

• The Makeup Effect uses a separate correction algorithm that performs more stably even with bright skin tones.

• Enabling the makeup effect helps maintain a natural skin appearance even if the primary correction effect temporarily deactivates.

(3) Use Advanced Correction Features

• Combining individual correction options such as 'Dark Circle Reduction' and 'Nasolabial Fold Reduction' can enhance the overall skin texture.

• These features operate independently of the skin correction function, maintaining consistency even when the correction effect becomes unstable.

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4.Future Improvements

The Prism development team is currently researching and testing a new skin correction algorithm designed to operate more reliably across various skin tones and lighting conditions.

The new algorithm aims to achieve the following improvements:

• Expanded skin tone recognition range

• Automatic lighting environment adjustment

• Enhanced real-time facial expression tracking and response

After internal quality verification, these improvements will be implemented through future Prism Lens updates.

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5.Additional Notes

The Prism team is continuously working to minimize visual inconsistencies across different user environments and to ensure a natural and consistent skin correction experience for all users.

Further details on these improvements will be shared in upcoming update notes.