Liquefaction is mostly studied for cohesionless soil, though it is also observed in cohesive soft soils. This chapter provides a comprehensive review of innovative methods for mitigating liquefaction, particularly focusing on new materials in soft soil improvement. A comparison with traditional methods is presented, addressing mechanisms, effectiveness, challenges, in situ applications, costs, and durability. The methods involve nanomaterials, synthetic fibres, recycled materials, partial soil saturation, and biocementation. New methods provide advantages over traditional cement methods to deal with challenges such as uniform penetration and gelation control. Experimental studies demonstrate effectiveness, but on-site applications and durability assessments are limited. Future research should explore environmental impacts and long-term performance, facilitating the transition from scientific experimentation to cost-effective commercial practice in geotechnical engineering.