Don't need mo biotin: Biotin deficiency is very very rare. It is trendy right now to take if for hair and nails. Going beyond 100 mcg per day is not necessary and there is no evidence of benefit beyond this amount. Biotin is a water soluble B vitamin, so your body *probably* would simply pee out the extra.
You do not compare two things. The following guidelines apply to the superlative: 1-syllable adjectives: add-est to the adjective (plus the). 1  My sister is the tallest in our family. 2  Yesterday was the coldest day of the year so far.
superlative definition The form of an adjective indicating the greatest degree of the quality that the adjective describes. Best is the superlative form of good; fastest is the superlative form of fast; most charming is the superlative form of charming. The usual superlative takes the ending -est. (Compare comparative.)