Final answer:
The sentence contains several grammatical errors, including a misspelling, incorrect phrase construction, and missing spaces. Corrections include 'proposition,' 'deep down,' 'being light,' 'blemish-free,' and proper spacing after commas.
Step-by-step explanation:
The sentence in question contains several grammatical errors. Firstly, 'propositon' is a misspelling of 'proposition', which should be corrected. Secondly, 'deepdown' should be written as two separate words, 'deep down'. Next, 'beinglight' is also misspelled and should be 'being light'. Additionally, the phrase 'skin blemish, free' is incorrect, it should be 'blemish-free' skin.
Lastly, there should be spaces after commas, so 'cuts nicks' should be 'cuts, nicks'. The corrected part of the sentence would be: 'is more effective because it penetrates deep down (being light and non-sticky) and works from within (because of its ayurvedic ingredients) to keep skin blemish-free and helps cope with cuts, nicks, burns, and nappy rash.'