Cleansing the Artificial Mind: A Self-Reflective Detoxification Framework for Large Language Models

Kaituo Zhang, Zhimeng Jiang, Na Zou


Abstract
Recent breakthroughs in Large Language Models (LLMs) have revealed remarkable generative capabilities and emerging self-regulatory mechanisms, including self-correction and self-rewarding. However, current detoxification techniques rarely exploit these built-in abilities; instead, they rely on external modules, labor-intensive data annotation, or human intervention –factors that hinder scalability and consistency. In this paper, we introduce a fully self-reflective detoxification framework that harnesses the inherent capacities of LLMs to detect, correct toxic content, and refine LLMs without external modules and data annotation. Specifically, we propose a Toxic Signal Detector—an internal self-identification mechanism, coupled with a systematic intervention process to transform toxic text into its non-toxic counterpart. This iterative procedure yields a contrastive detoxification dataset used to fine-tune the model, enhancing its ability for safe and coherent text generation. Experiments on benchmark datasets such as DetoxLLM and ParaDetox show that our method achieves better detoxification performance than state-of-the-art methods while preserving semantic fidelity. By obviating the need for human intervention or external components, this paper reveals the intrinsic self-detoxification ability of LLMs, offering a consistent and effective approach for mitigating harmful content generation. Ultimately, our findings underscore the potential for self-regulated language models and more responsible text generation systems. Code: https://github.com/KaituoZhang/SRD Warning: this paper may contain offensive content.
Anthology ID:
2026.findings-emnlp.224
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2026
Month:
October
Year:
2026
Address:
Budapest, Hungary
Editors:
Hung-Yi Lee, Sunipa Dev, Jessy Li, Desmond Elliott
Venue:
Findings
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SIGDAT
Publisher:
Association for Computational Linguistics
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Pages:
4699–4722
Language:
URL:
https://aclanthology.org/2026.findings-emnlp.224/
DOI:
Bibkey:
Cite (ACL):
Kaituo Zhang, Zhimeng Jiang, and Na Zou. 2026. Cleansing the Artificial Mind: A Self-Reflective Detoxification Framework for Large Language Models. In Findings of the Association for Computational Linguistics: EMNLP 2026, pages 4699–4722, Budapest, Hungary. Association for Computational Linguistics.
Cite (Informal):
Cleansing the Artificial Mind: A Self-Reflective Detoxification Framework for Large Language Models (Zhang et al., Findings 2026)
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https://aclanthology.org/2026.findings-emnlp.224.pdf